An introductory text/book on relational databases

Anyone have any suggestions for a good introductory text on relational databases? This is research for an article. I'll read it before suggesting it, of course. There are so many books out there, that I thought I'd ask you guys for opinions. Thank you!

You can start with
Introduction to Relational Databases by Christopher Allen
ISBN-10: 0072229241
ISBN-13: 978-0072229240
An Introduction to Relational Database Theory by Hugh Darwen
ISBN: 978-87-7681-500-4

Similar Messages

Insert XML file into Relational database model - no XMLTYPE!

Dear all,
How can I store a known complex XML file into an existing relational database WITHOUT using xmltypes in the database ?
I read the article on DBMS_XMLSTORE. DBMS_XMLSTORE indeed partially bridges the gap between XML and RDBMS to a certain extent, namely for simply structured XML (canonical structure) and simple tables.
However, when the XML structure will become arbitrary and rapidly evolving, surely there must be a way to map XML to a relational model more flexibly.
We work in a java/Oracle10 environment that receives very large XML documents from an independent data management source. These files comply with an XML schema. That is all we know. Still, all these data must be inserted/updated daily in an existing relational model. Quite an assignment isn't it ?
The database does and will not contain XMLTYPES, only plain RDBMS tables.
Are you aware of a framework/product or tool to do what DBMS_XMLSTORE does but with any format of XML file ? If not, I am doomed.
Cheers.
Luc.
Edited by: user6693852 on Jan 13, 2009 7:02 AM

In case you decide to follow my advice, here's a simple example showing how to do this.. (Note the XMLTable syntax is the preferred approach in 10gr2 and later..
SQL> spool testase.log
SQL> --
SQL> connect / as sysdba
Connected.
SQL> --
SQL> set define on
SQL> set timing on
SQL> --
SQL> define USERNAME = XDBTEST
SQL> --
SQL> def PASSWORD = XDBTEST
SQL> --
SQL> def USER_TABLESPACE = USERS
SQL> --
SQL> def TEMP_TABLESPACE = TEMP
SQL> --
SQL> drop user &USERNAME cascade
2 /
old   1: drop user &USERNAME cascade
new   1: drop user XDBTEST cascade
User dropped.
Elapsed: 00:00:00.59
SQL> grant create any directory, drop any directory, connect, resource, alter session, create view to &USERNAME identified by &PASS
ORD
2 /
old   1: grant create any directory, drop any directory, connect, resource, alter session, create view to &USERNAME identified by &
ASSWORD
new   1: grant create any directory, drop any directory, connect, resource, alter session, create view to XDBTEST identified by XDB
EST
Grant succeeded.
Elapsed: 00:00:00.01
SQL> alter user &USERNAME default tablespace &USER_TABLESPACE temporary tablespace &TEMP_TABLESPACE
2 /
old   1: alter user &USERNAME default tablespace &USER_TABLESPACE temporary tablespace &TEMP_TABLESPACE
new   1: alter user XDBTEST default tablespace USERS temporary tablespace TEMP
User altered.
Elapsed: 00:00:00.00
SQL> connect &USERNAME/&PASSWORD
Connected.
SQL> --
SQL> var SCHEMAURL varchar2(256)
SQL> var XMLSCHEMA CLOB
SQL> --
SQL> set define off
SQL> --
SQL> begin
2    :SCHEMAURL := 'http://xmlns.example.com/askTom/TransactionList.xsd';
3    :XMLSCHEMA :=
4 '<?xml version="1.0" encoding="UTF-8"?>
5 
6 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb" xdb:storeVarrayAsTable="true">
7     <xs:element name="TransactionList" type="transactionListType" xdb:defaultTable="LOCAL_TABLE"/>
8     <xs:complexType name="transactionListType" xdb:maintainDOM="false" xdb:SQLType="TRANSACTION_LIST_T">
9             <xs:sequence>
10                     <xs:element name="Transaction" type="transactionType" maxOccurs="unbounded" xdb:SQLCollType="TRANSACTION_V"
>
11             </xs:sequence>
12     </xs:complexType>
13     <xs:complexType name="transactionType" xdb:maintainDOM="false" xdb:SQLType="TRANSACTION_T">
14             <xs:sequence>
15                     <xs:element name="TradeVersion" type="xs:integer"/>
16                     <xs:element name="TransactionId" type="xs:integer"/>
17                     <xs:element name="Leg" type="legType" maxOccurs="unbounded" xdb:SQLCollType="LEG_V"/>
18             </xs:sequence>
19             <xs:attribute name="id" type="xs:integer" use="required"/>
20     </xs:complexType>
21     <xs:complexType name="paymentType" xdb:maintainDOM="false" xdb:SQLType="PAYMENT_T">
22             <xs:sequence>
23                     <xs:element name="StartDate" type="xs:date"/>
24                     <xs:element name="Value" type="xs:integer"/>
25             </xs:sequence>
26             <xs:attribute name="id" type="xs:integer" use="required"/>
27     </xs:complexType>
28     <xs:complexType name="legType" xdb:maintainDOM="false" xdb:SQLType="LEG_T">
29             <xs:sequence>
30                     <xs:element name="LegNumber" type="xs:integer"/>
31                     <xs:element name="Basis" type="xs:integer"/>
32                     <xs:element name="FixedRate" type="xs:integer"/>
33                     <xs:element name="Payment" type="paymentType" maxOccurs="unbounded" xdb:SQLCollType="PAYMENT_V"/>
34             </xs:sequence>
35             <xs:attribute name="id" type="xs:integer" use="required"/>
36     </xs:complexType>
37 </xs:schema>';
38 end;
39 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
SQL> set define on
SQL> --
SQL> declare
2    res boolean;
3    xmlSchema xmlType := xmlType(:XMLSCHEMA);
4 begin
5    dbms_xmlschema.registerSchema
6    (
7      schemaurl => :schemaURL,
8      schemadoc => xmlSchema,
9      local     => TRUE,
10      genTypes => TRUE,
11      genBean   => FALSE,
12      genTables => TRUE,
13      ENABLEHIERARCHY => DBMS_XMLSCHEMA.ENABLE_HIERARCHY_NONE
14    );
15 end;
16 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.26
SQL> desc LOCAL_TABLE
Name                                                                   Null?    Type
TABLE of SYS.XMLTYPE(XMLSchema "http://xmlns.example.com/askTom/TransactionList.xsd" Element "TransactionList") STORAGE Object-rela
ional TYPE "TRANSACTION_LIST_T"
SQL> --
SQL> create or replace VIEW TRAN_VIEW
2 as
3 select
4    extractvalue(x.column_value,'/Transaction/TradeVersion/text()') tradeversion,
5    extractvalue(x.column_value,'/Transaction//text()') transactionid
6 from
7    local_table,
8    table(xmlsequence(extract(OBJECT_VALUE,'/TransactionList/Transaction'))) x
9 /
View created.
Elapsed: 00:00:00.01
SQL> create or replace VIEW TRAN_LEG_VIEW
2 as
3 select
4    extractvalue(x.column_value,'/Transaction/TransactionId/text()') transactionid,
5    extractvalue(y.column_value,'/Leg/Basis/text()') leg_basis,
6    extractValue(y.column_value,'/Leg/FixedRate/text()') leg_fixedrate
7 from
8    local_table,
9    table(xmlsequence(extract(OBJECT_VALUE,'/TransactionList/Transaction'))) x,
10    table(xmlsequence(extract(x.column_value,'/Transaction/Leg'))) y
11 /
View created.
Elapsed: 00:00:00.01
SQL> create or replace VIEW TRAN_LEG_PAY_VIEW
2 as
3 select
4    extractvalue(x.column_value,'/Transaction/TransactionId/text()') transactionid,
5    extractvalue(y.column_value,'/Leg/LegNumber/text()') leg_legnumber,
6    extractvalue(z.column_value,'/Payment/StartDate/text()') pay_startdate,
7    extractValue(z.column_value,'/Payment/Value/text()') pay_value
8 from
9    local_table,
10    table(xmlsequence(extract(OBJECT_VALUE,'/TransactionList/Transaction'))) x,
11    table(xmlsequence(extract(x.column_value,'/Transaction/Leg'))) y,
12    table(xmlsequence(extract(y.column_value,'/Leg/Payment'))) z
13 /
View created.
Elapsed: 00:00:00.03
SQL> desc TRAN_VIEW
Name                                                                   Null?    Type
TRADEVERSION                                                                    NUMBER(38)
TRANSACTIONID                                                                   VARCHAR2(4000)
SQL> --
SQL> desc TRAN_LEG_VIEW
Name                                                                   Null?    Type
TRANSACTIONID                                                                   NUMBER(38)
LEG_BASIS                                                                       NUMBER(38)
LEG_FIXEDRATE                                                                   NUMBER(38)
SQL> --
SQL> desc TRAN_LEG_PAY_VIEW
Name                                                                   Null?    Type
TRANSACTIONID                                                                   NUMBER(38)
LEG_LEGNUMBER                                                                   NUMBER(38)
PAY_STARTDATE                                                                   DATE
PAY_VALUE                                                                       NUMBER(38)
SQL> --
SQL> create or replace VIEW TRAN_VIEW_XMLTABLE
2 as
3 select t.*
4    from LOCAL_TABLE,
5         XMLTable
6         (
7            '/TransactionList/Transaction'
8            passing OBJECT_VALUE
9            columns
10            TRADE_VERSION NUMBER(4) path 'TradeVersion/text()',
11            TRANSACTION_ID NUMBER(4) path 'TransactionId/text()'
12         ) t
13 /
View created.
Elapsed: 00:00:00.01
SQL> create or replace VIEW TRAN_LEG_VIEW_XMLTABLE
2 as
3 select t.TRANSACTION_ID, L.*
4    from LOCAL_TABLE,
5         XMLTable
6         (
7            '/TransactionList/Transaction'
8            passing OBJECT_VALUE
9            columns
10            TRANSACTION_ID NUMBER(4) path 'TransactionId/text()',
11            LEG            XMLType   path 'Leg'
12         ) t,
13         XMLTABLE
14         (
15           '/Leg'
16           passing LEG
17           columns
18           LEG_NUMBER     NUMBER(4) path 'LegNumber/text()',
19           LEG_BASIS      NUMBER(4) path 'Basis/text()',
20           LEG_FIXED_RATE NUMBER(4) path 'FixedRate/text()'
21         ) l
22 /
View created.
Elapsed: 00:00:00.01
SQL> create or replace VIEW TRAN_LEG_PAY_VIEW_XMLTABLE
2 as
3 select TRANSACTION_ID, L.LEG_NUMBER, P.*
4    from LOCAL_TABLE,
5         XMLTable
6         (
7            '/TransactionList/Transaction'
8            passing OBJECT_VALUE
9            columns
10            TRANSACTION_ID NUMBER(4) path 'TransactionId/text()',
11            LEG            XMLType   path 'Leg'
12         ) t,
13         XMLTABLE
14         (
15           '/Leg'
16           passing LEG
17           columns
18           LEG_NUMBER     NUMBER(4) path 'LegNumber/text()',
19           PAYMENT        XMLType   path 'Payment'
20         ) L,
21         XMLTABLE
22         (
23           '/Payment'
24           passing PAYMENT
25           columns
26           PAY_START_DATE     DATE      path 'StartDate/text()',
27           PAY_VALUE          NUMBER(4) path 'Value/text()'
28         ) p
29 /
View created.
Elapsed: 00:00:00.03
SQL> desc TRAN_VIEW_XMLTABLE
Name                                                                   Null?    Type
TRADE_VERSION                                                                   NUMBER(4)
TRANSACTION_ID                                                                  NUMBER(4)
SQL> --
SQL> desc TRAN_LEG_VIEW_XMLTABLE
Name                                                                   Null?    Type
TRANSACTION_ID                                                                  NUMBER(4)
LEG_NUMBER                                                                      NUMBER(4)
LEG_BASIS                                                                       NUMBER(4)
LEG_FIXED_RATE                                                                  NUMBER(4)
SQL> --
SQL> desc TRAN_LEG_PAY_VIEW_XMLTABLE
Name                                                                   Null?    Type
TRANSACTION_ID                                                                  NUMBER(4)
LEG_NUMBER                                                                      NUMBER(4)
PAY_START_DATE                                                                  DATE
PAY_VALUE                                                                       NUMBER(4)
SQL> --
SQL> set long 10000 pages 100 lines 128
SQL> set timing on
SQL> set autotrace on explain
SQL> set heading on feedback on
SQL> --
SQL> VAR DOC1 CLOB
SQL> VAR DOC2 CLOB
SQL> --
SQL> begin
2    :DOC1 :=
3 '<TransactionList>
4    <Transaction id="1">
5      <TradeVersion>1</TradeVersion>
6      <TransactionId>1</TransactionId>
7      <Leg id="1">
8        <LegNumber>1</LegNumber>
9        <Basis>1</Basis>
10        <FixedRate>1</FixedRate>
11        <Payment id="1">
12          <StartDate>2000-01-01</StartDate>
13          <Value>1</Value>
14        </Payment>
15        <Payment id="2">
16          <StartDate>2000-01-02</StartDate>
17          <Value>2</Value>
18        </Payment>
19      </Leg>
20      <Leg id="2">
21        <LegNumber>2</LegNumber>
22        <Basis>2</Basis>
23        <FixedRate>2</FixedRate>
24        <Payment id="1">
25          <StartDate>2000-02-01</StartDate>
26          <Value>10</Value>
27        </Payment>
28        <Payment id="2">
29          <StartDate>2000-02-02</StartDate>
30          <Value>20</Value>
31        </Payment>
32      </Leg>
33    </Transaction>
34    <Transaction id="2">
35      <TradeVersion>2</TradeVersion>
36      <TransactionId>2</TransactionId>
37      <Leg id="1">
38        <LegNumber>21</LegNumber>
39        <Basis>21</Basis>
40        <FixedRate>21</FixedRate>
41        <Payment id="1">
42          <StartDate>2002-01-01</StartDate>
43          <Value>21</Value>
44        </Payment>
45        <Payment id="2">
46          <StartDate>2002-01-02</StartDate>
47          <Value>22</Value>
48        </Payment>
49      </Leg>
50      <Leg id="22">
51        <LegNumber>22</LegNumber>
52        <Basis>22</Basis>
53        <FixedRate>22</FixedRate>
54        <Payment id="21">
55          <StartDate>2002-02-01</StartDate>
56          <Value>210</Value>
57        </Payment>
58        <Payment id="22">
59          <StartDate>2002-02-02</StartDate>
60          <Value>220</Value>
61        </Payment>
62      </Leg>
63    </Transaction>
64 </TransactionList>';
65    :DOC2 :=
66 '<TransactionList>
67    <Transaction id="31">
68      <TradeVersion>31</TradeVersion>
69      <TransactionId>31</TransactionId>
70      <Leg id="31">
71        <LegNumber>31</LegNumber>
72        <Basis>31</Basis>
73        <FixedRate>31</FixedRate>
74        <Payment id="31">
75          <StartDate>3000-01-01</StartDate>
76          <Value>31</Value>
77        </Payment>
78      </Leg>
79    </Transaction>
80 </TransactionList>';
81 end;
82 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.01
SQL> insert into LOCAL_TABLE values ( xmltype(:DOC1))
2 /
1 row created.
Elapsed: 00:00:00.01
Execution Plan
Plan hash value: 1
| Id | Operation                | Name        | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | INSERT STATEMENT         |             |     1 |   100 |     1   (0)| 00:00:01 |
|   1 | LOAD TABLE CONVENTIONAL | LOCAL_TABLE |       |       |            |          |
SQL> insert into LOCAL_TABLE values ( xmltype(:DOC2))
2 /
1 row created.
Elapsed: 00:00:00.01
Execution Plan
Plan hash value: 1
| Id | Operation                | Name        | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | INSERT STATEMENT         |             |     1 |   100 |     1   (0)| 00:00:01 |
|   1 | LOAD TABLE CONVENTIONAL | LOCAL_TABLE |       |       |            |          |
SQL> select * from TRAN_VIEW_XMLTABLE
2 /
TRADE_VERSION TRANSACTION_ID
            1              1
            2              2
           31             31
3 rows selected.
Elapsed: 00:00:00.03
Execution Plan
Plan hash value: 650975545
| Id | Operation          | Name                           | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT   |                                |     3 |   168 |     3   (0)| 00:00:01 |
|   1 | NESTED LOOPS      |                                |     3 |   168 |     3   (0)| 00:00:01 |
|* 2 |   TABLE ACCESS FULL| SYS_NTGgl+TKyhQnWoFRSrCxeX9g== |     3 |   138 |     3   (0)| 00:00:01 |
|* 3 |   INDEX UNIQUE SCAN| SYS_C0010174                   |     1 |    10 |     0   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   2 - filter("SYS_NC_TYPEID$" IS NOT NULL)
   3 - access("NESTED_TABLE_ID"="LOCAL_TABLE"."SYS_NC0000800009$")
Note
   - dynamic sampling used for this statement
SQL> select * from TRAN_LEG_VIEW_XMLTABLE
2 /
TRANSACTION_ID LEG_NUMBER LEG_BASIS LEG_FIXED_RATE
             1          1          1              1
             1          2          2              2
             2         21         21             21
             2         22         22             22
            31         31         31             31
5 rows selected.
Elapsed: 00:00:00.04
Execution Plan
Plan hash value: 1273661583
| Id | Operation           | Name                           | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT    |                                |     5 |   560 |     7 (15)| 00:00:01 |
|* 1 | HASH JOIN          |                                |     5 |   560 |     7 (15)| 00:00:01 |
|   2 |   NESTED LOOPS      |                                |     3 |   159 |     3   (0)| 00:00:01 |
|* 3 |    TABLE ACCESS FULL| SYS_NTGgl+TKyhQnWoFRSrCxeX9g== |     3 |   129 |     3   (0)| 00:00:01 |
|* 4 |    INDEX UNIQUE SCAN| SYS_C0010174                   |     1 |    10 |     0   (0)| 00:00:01 |
|* 5 |   TABLE ACCESS FULL | SYS_NTUmyermF/S721C/2UXo40Uw== |     5 |   295 |     3   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - access("SYS_ALIAS_1"."NESTED_TABLE_ID"="SYS_ALIAS_0"."SYS_NC0000800009$")
   3 - filter("SYS_NC_TYPEID$" IS NOT NULL)
   4 - access("NESTED_TABLE_ID"="LOCAL_TABLE"."SYS_NC0000800009$")
   5 - filter("SYS_NC_TYPEID$" IS NOT NULL)
Note
   - dynamic sampling used for this statement
SQL> select * from TRAN_LEG_PAY_VIEW_XMLTABLE
2 /
TRANSACTION_ID LEG_NUMBER PAY_START PAY_VALUE
             1          1 01-JAN-00          1
             1          1 02-JAN-00          2
             1          2 01-FEB-00         10
             1          2 02-FEB-00         20
             2         21 01-JAN-02         21
             2         21 02-JAN-02         22
             2         22 01-FEB-02        210
             2         22 02-FEB-02        220
            31         31 01-JAN-00         31
9 rows selected.
Elapsed: 00:00:00.07
Execution Plan
Plan hash value: 4004907785
| Id | Operation            | Name                           | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT     |                                |     9 | 1242 |    10 (10)| 00:00:01 |
|* 1 | HASH JOIN           |                                |     9 | 1242 |    10 (10)| 00:00:01 |
|* 2 |   HASH JOIN          |                                |     5 |   480 |     7 (15)| 00:00:01 |
|   3 |    NESTED LOOPS      |                                |     3 |   159 |     3   (0)| 00:00:01 |
|* 4 |     TABLE ACCESS FULL| SYS_NTGgl+TKyhQnWoFRSrCxeX9g== |     3 |   129 |     3   (0)| 00:00:01 |
|* 5 |     INDEX UNIQUE SCAN| SYS_C0010174                   |     1 |    10 |     0   (0)| 00:00:01 |
|* 6 |    TABLE ACCESS FULL | SYS_NTUmyermF/S721C/2UXo40Uw== |     5 |   215 |     3   (0)| 00:00:01 |
|* 7 |   TABLE ACCESS FULL | SYS_NTelW4ZRtKS+WKqCaXhsHnNQ== |     9 |   378 |     3   (0)| 00:00:01 |
Predicate Information (identified by operation id):
   1 - access("NESTED_TABLE_ID"="SYS_ALIAS_1"."SYS_NC0000900010$")
   2 - access("SYS_ALIAS_1"."NESTED_TABLE_ID"="SYS_ALIAS_0"."SYS_NC0000800009$")
   4 - filter("SYS_NC_TYPEID$" IS NOT NULL)
   5 - access("NESTED_TABLE_ID"="LOCAL_TABLE"."SYS_NC0000800009$")
   6 - filter("SYS_NC_TYPEID$" IS NOT NULL)
   7 - filter("SYS_NC_TYPEID$" IS NOT NULL)
Note
   - dynamic sampling used for this statement
SQL>Out of interest why are you so against using XMLType...
Edited by: mdrake on Jan 13, 2009 8:25 AM

How to store, in an effective way, analyzer data into a relational database?

We want to store the "sweep traces" of a network analyzer in a relational database in a way that it saves as much as possible space without loosing resolution.
The solutions were we thinking on are to separate the x-axes information from the y-axes information and store it in different tables of the database.
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m?

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The use of a third table that links the X-axe and y-axe table together depends on if I store the datapoints in the y-axe table sequential, so I need an identification of the points belonging together and I can have a varying number of data-points, (i.e. 401 of 801 ...) or I save it in one record.
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Another solution is save the datapoints as a semicolon ( separated text string in one field.
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In my Oracle Rdb database I can use "Varchar" fields.
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The question sti
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Please let me know what DSC is??
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See the tables.
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RSDCUBET Texts on InfoCubes
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how could we get the report of previous five years sale of the products.
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suggest whether dropped Product name from the sale table as I already have a column prodid in it?Yes. Duplicated data is a Bad Thing. This is Rule #1 of the late Dr. Codd's 12 rules. These are the foundationstones of good relation design. Wikipedia has a good introduction to them.
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Web Analysis Report prompted for relational database login

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BUT, just one thing Apple:
Why in the last year have you pushed so hard to integrate/sync devices via the Cloud, only to introduce a phenomenal tool like the Text Books which can only be used on one device, the iPad, and almost blatantly makes no intention to talk to other devices?
I have invested in the whole Apple product line. I am invested in the ecosystem entirely. Why can I not start reading/note taking from my Biology Text in class on my iPad, continue skimming it from where I left off on my iPhone while going home on the train, and finally pull up the Text Book in iBooks on my Macbook (complete with my notes from the day) where I ultimately want to cut and paste my noted text to be used as quotes in a term paper I am composing in Pages (and what if Pages even talked to iBooks and auto formatted a Bibliography based on the text I have dragged and dropped)? As a student this scenario is not only very forseeable, but neccessary if I am to go over to a digital book format.
Why is this not possible? Should I honestly believe it is the result of poor planning, or rather a strategy to boost iPad sales by making Text Books explicit to the iPad?
After all, in a parallel analogy to the above, Apple ecosystem users can currently: start a film on their iPad, pick up where they left off on their iPhone, and then ultimately finish the film on their Mac or Apple TV. I can even start a normal book on my iPad and leave a bookmark, which I can later pick up on my iPhone. This is awesome and exemplifies the consideration and rigorous thought that I have grown to expect Apple to put in to their products. The devices talk to each other and "it just works." But is apple really allowing all of this, except when it comes to TEXTBOOKS, which is an educational tool?
If the digital Text Books are really going to do so much to revolutionize education, then shouldn't Text Books be available across ALL devices and to all people who ALREADY own iOS/OSX devices in order to reach its maximum potential for influencing a change in education? If these tools are really so revolutionary and represent a paradigm shift, then they will speak for themselves and schools will naturally get on board and dole out the money for the class sets of iPads.
Please Apple, I switched over for a reason. Mostly due to your philosophies and ability to make things that "just work". Don't sell out here. Not allowing Text Books to be accessed across devices does not have the markings of a "paradigm shift in the dark ages of education", but instead reeks of a slick marketing scam by the most successful company in the world to pump tax money out of education budgets into the overflowing pockets of Apple. Shame on you. That is not giving to education, that is taking.
Make good and develop TextBooks to work across ALL iOS/OSX devices, please.
Respectfully,
A teacher/student

My understanding is that you can use the Cloud on any device you want but only one at a time. Just as you can install the Creative Collections on as many computers as you wish but it can only be activated on two at a time but which is not really true since you can only use one of them at a time anyway.
I think the wording about this should change.
For insance I travel and may or may not wish to lug a laptop with me. It is my understanding that I can when raveling log into the CC download m apps and use them on any computer capable of running the apps and work away, But since I am logged in at a different location on a different device it will only work on that device.
And this is the way it shoulkd work because say you travel and your laptop is lost or stolen then you should be able to still use your apps and also stop them from working on the lost computer by logging in somewhere else.
This is the way Iunderstand the advantages of the Cloud. It is designed to be flexible and not inhibiting.
Now on the other had if I ahsd an assistant that I want to use these apps then it makes sense to purchase a license for them as well.
It is one license for one user as it should be but that user can access it where ever they need it.
That is my understanding.

Not able to create XML from an existing relational database

Hi,
I am trying to create and xml from an existing relational database. I am not able to get any XML data, I receive "XMLTYPE()" as the result.
Here's the query -
SQL> select o.order_id, XMLELEMENT("order", XMLATTRIBUTES(o.order_id as ID)) AS "result" from order_
info o where order_id=2793;
ORDER_ID
result()
+2793+
XMLTYPE()
I was expecting to get +<order id=2793 />+ instead of XMLTYPE().
I am using -
SQLPlus: Release 9.0.1.0.1*
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
I have also run some checks to confirm XML DB installation -
SQL> select 1 from all_users where username = 'XDB';
+1+
+1+
SQL> desc RESOURCE_VIEW;
Name                                      Null?    Type
RES                                                SYS.XMLTYPE
ANY_PATH                                           VARCHAR2(4000)
RESID                                              RAW(16)
I think, I have something wrong with installation or configuration.
Any idea about what have I done wrong here?

Works fine now. Got the result "<order ID="2793"></order>".
Thanks. :-)

Essbase as a source in OBIEE 11g and using lookup to Relation database

Hello All,
We are trying to implement Essbase as primary source for our obiee 11g repository and using relational database as secondary source of data.
I was using a lookup functionality in repository to lookup value from one of the Essbase's Dimension's attribute to relational database, however, there is error when testing this in OBIEE Dashboards.
And tried to look this error in support.oracle and googled it but was not able to find anything on it.
State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 43113] Message returned from OBIS. [nQSError: 43119] Query Failed: [nQSError: 46008] Internal error: File server\Query\Src\SQLookupUtility.cpp, line 145. (HY000)
Have you had any such issue and how can we pass this issue?
I am trying to find if there are any quick resolution before going to oracle support.
TIA.
Parish

Is Essbase 11.1.1.3 supported as a source for OBIEE 11g?From the certification matrix (http://www.oracle.com/technetwork/middleware/bi-enterprise-edition/bi-11gr1certmatrix-166168.xls) we can see that only Essbase 9.3.3+ and 11.1.2+ are supported, not 11.1.1.3
Paul

Insert XML file into Relational database model without using XMLTYPE tables

Dear all,
How can I store a known complex XML file into an existing relational database WITHOUT using xmltypes in the database ?
I read the article on DBMS_XMLSTORE. DBMS_XMLSTORE indeed partially bridges the gap between XML and RDBMS to a certain extent, namely for simply structured XML (canonical structure) and simple tables.
However, when the XML structure will become arbitrary and rapidly evolving, surely there must be a way to map XML to a relational model more flexibly.
We work in a java/Oracle10 environment that receives very large XML documents from an independent data management source. These files comply with an XML schema. That is all we know. Still, all these data must be inserted/updated daily in an existing relational model. Quite an assignment isn't it ?
The database does and will not contain XMLTYPES, only plain RDBMS tables.
Are you aware of a framework/product or tool to do what DBMS_XMLSTORE does but with any format of XML file ? If not, I am doomed.
Constraints : Input via XML files defined by third party
Storage : relational database model with hundreds of tables and thousands of existing queries that can not be touched. The model must not be altered.
Target : get this XML into the database on a daily basis via an automated process.
Cheers.
Luc.

Luc,
your Doomed !
If you would try something like DBMS_XMLSTORE, you probably would be into serious performance problems in your case, very fast, and it would be very difficult to manage.
If you would use a little bit of XMLType stuff, you would be able to shred the data into the relational model very fast and controlable. Take it from me, I am one of those old geezers like Mr. Tom Kyte way beyond 40 years (still joking). No seriously. I started out as a classical PL/SQL, Forms Guy that switched after two years to become a "DBA 1.0" and Mr Codd and Mr Date were for years my biggest hero's. I have the utmost respect for Mr. Tom Kyte for all his efforts for bringing the concepts manual into the development world. Just to name some off the names that influenced me. But you will have to work with UNSTRUCTURED data (as Mr Date would call it). 80% of the data out there exists off it. Stuff like XMLTABLE and XML VIEWs bridge the gap between that unstructured world and the relational world. It is very doable to drag and drop an XML file into the XMLDB database into a XMLtype table and or for instance via FTP. From that point on it is in the database. From there you could move into relational tables via XMLTABLE methods or XML Views.
You could see the described method as a filtering option so XML can be transformed into relational data. If you don't want any XML in your current database, then create an small Oracle database with XML DB installed (if doable 11.1.0.7 regarding the best performance --> all the new fast optimizer stuff etc). Use that database as a staging area that does all the XML shredding for you into relational components and ship the end result via database links and or materialized views or other probably known methodes into your relational database that isn't allowed to have XMLType.
This way you would keep your realtional Oracle database clean and have the Oracle XML DB staging database do all the filtering and shredding into relational components.
Throwing the XML DB option out off the window beforehand would be like replacing your Mercedes with a bicycle. With both you will be able to travel the distance from Paris to Rome, but it will take you a hell of lot longer.
:-)

Why do I keep getting error message from Digital Editions when trying to open it. Keeps telling me that it has encountered a problem and needs to close. I need this apparently to download a text book fro Proquest - need the text book for Uni work what giv

Why do I keep getting an error message from Digital Editions saying that it has encountered a problem and needs to close. I need this programme to download a text book from Proquest for University work what gives????

You are using ADE on Windows or Mac ? and their versions ??
Please restart your machine and try once again.
Thanks

Information on full text search in Oralce Database

Hi,
We are looking to implement full text search using Oracle database. Where can I find info on this topic? Specifically, I'm looking for
1) an overview of how to implement them in Oracle database - column type, size/limitations etc.
2) does oracle database come with filters to extract and filter data from different file formats such as Ms office, PDF (images) etc.
Appreciate your reply

Look into the Oracle Text documentation. It has the answers to your questions.

What is the Text Book correct way to do a spot uv merging multiple applications and exporting from 1

I am unsuccesssfully finishing a project using Spot UV and about to start another. I want to start this one out the Text Book correct way. Here are the details.
I have logo's coming from Illustrator that I want to have a spot UV on
I have photos coming from photoshop that I want a spot UV on
I have a design element in In Design that I want a spot UV on
What is the Correct way to get everything into In Design have it output to a PDF that a printer could use and a second one that I could use for the Web that does not show the spot uv
A note is that the last project I followed all the tutorials on the web that say to use channels in photoshop to make my spot UV that in the end I think is causing me a lot of headaces right now.
Thanks in advance

Put the spot UV on its own layer in InDesign. Turn it off for the web version of the PDF.
Bob

An introductory text/book on relational databases

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