Databae Question - Specifically Relational Tables

Hi everyone, can anyone tell me how to do a database that contains relational tables using MS Access 2000. Do I have to create the links between the tables using MS Access or do I do this using Java code.
If it can be done in both ways which is the best to use and why?
If it helps I will be creating a database with 4 tables, A,B,C,D and would like the relationships to be as follows:
A - B
C - D
I will also be having a function that allows me to search the entire database for a certain keyword, does this mean that i will need to link all four of the table togethor using a one - to - many relationship e.g.
A - B, A - C, A - D etc.
Thanks for all your help

What are these "links" you are asking about? If you want to join two tables, you can do that in SQL without having to configure the database in any way. If that's what you meant by "link"...

Similar Messages

Reading XML file from specific location&Storing xmldata into related tables

I am new to xml.
My requirement is,
1) Get the xml file from specified location (C:\xmlfiles\ xmldata.xml)
2)Convert xml data in clob data.
3)store the data into related table.
and vice-versa.
What i did,
a) I got the data from related tables and converted into xmlformat using SQLX
b)converted this resultset into clob data and stored as xml file in specific location.
It uses more then ten tables.
All this help i got from AskTom site , thanks for that.
Now i have to do vise-versa, i.e. i have to perform 1), 2), 3) steps........
Please tell me proper steps to acheive it.
Thanks in advance for giving your precious time to solve my issue.

Have you read the"XMLDB FAQ" in this Forum?
You could use stuff like:
create or replace directory xmldir as C:\xmlfiles'
declare
xmldata xmltype;
begin
xmldata := xmltype(bfilename('XMLDIR','xmldata.xml'),nls_charset_id('AL32UTF8'));
-- etc, etc your code --
-- --> convert to clob by using for instance getclobval() function
-- --> then insert the data in your relational table with CLOB column
-- etc, etc your code --
end;
/

Retrieving data from a relational table and CLOB as a whole XML file

I created the table lob_example and I have managed to insert XML document into it using XML SQL Utility. In this document I put contents of <DESCRIPTION> tag into CDATA section.
LOB_EXAMPLE
Name Null? Type
ID NOT NULL NUMBER
DESCRIPTION CLOB
NAME VARCHAR2(40)
But I could not retrieve this data properly. I can think of only one solution - to parse and build the whole XMLDocument. I found the suggestion of another solution to use Oracle8i views to do that in http://technet.oracle.com/tech/xml/infoocs/otnwp/about_oracle_xml_products.htm, but this text is not clear enough for me.
I would like to quote the fragment from document mentioned above, which is ambiguous for me:
"Combining XML Documents and Data Using Views
Finally, if you have a combination of structured and unstructured XML data, but still want to view and operate on it as a whole, you can use Oracle8i views. Views enable you to construct an object on the "fly" by combining XML data stored in a variety of ways. So, you can store structured data (such as employee data, customer data, and so on) in one location within object -relational tables, and store related unstructured data (such as descriptions and comments) within a CLOB. When you need to retrieve the data as a whole, you simply construct the structure from the various pieces of data with the use of type constructors in the view's select statement. The XML SQL Utility then enables retrieving the constructed data from the view as a single XML document."
The main question is - how to use type constructors in the view's select statement?

Hello
Sorry for asking the same question again, but any responses would be greatly appreciated.
How to use type constructors in the view's select statement?
I could not find any answers for this question on Technet. Maybe the other approaches are more efficient to combine the part of data from CLOB with data from other column types?
Thank you

Parent child relation tables

Hi experts,
Please check it my code . in this procedure first cursor only inserted into t1 temp table not inserted second cursor please check it and modified the my code.
i want inserted parent child relation table like bellow
parent child
a b
a c
a d
b l
b m
b n
c d like that only inserted
PROCEDURE TEST_PARENTS_CHILD( p_TABLE VARCHAR2)
IS
CURSOR c(P_TABLE varchar2)
IS
SELECT p.table_name PARENT, c.table_name CHILD
FROM user_constraints p, user_constraints c
WHERE (p.constraint_type = 'P' OR p.constraint_type = 'U')
AND c.constraint_type = 'R'
AND p.constraint_name = c.r_constraint_name
AND p.table_name = P_TABLE;
CURSOR C1(p_child varchar2) IS SELECT p.table_name PARENT_TABLE, c.table_name CHILD_TABLE
FROM user_constraints p, user_constraints c
WHERE (p.constraint_type = 'P' OR p.constraint_type = 'U')
AND c.constraint_type = 'R'
AND p.constraint_name = c.r_constraint_name
AND p.table_name = P_CHILD;
type array
IS
TABLE OF T1%ROWTYPE INDEX BY PLS_INTEGER;
t_data ARRAY;
BEGIN
FOR I IN C(P_TABLE)
LOOP
FETCH C bulk collect INTO T_DATA limit 1000;
--- EXIT WHEN C%NOTFOUND;
FORALL I IN 1..T_DATA.last
INSERT INTO T1 VALUES T_DATA(I);
FOR J IN C1(i.CHILD)
LOOP
FETCH C1 BULK COLLECT INTO T_DATA LIMIT 1000;
--EXIT
--WHEN C1%NOTFOUND;
FORALL j IN 1..T_DATA.last
INSERT INTO T1 VALUES T_DATA(j);
end loop;
END LOOP;
END TEST_PARENTS_CHILD;
Regards,
Venkat

You've been asked before on your previous questions (all of which still appear to be unanswered) to read the FAQ: {message:id=9360002} and post correct details of your question, and use {noformat}{noformat} tags to preserve your code/data formatting on the forum.
But still you post a question lacking all the information and formatting. If you can't be bothered to help us understand your issue (and read your code), why do you expect others will be bothered to try and help you?

Approach to parse large number of XML files into the relational table.

We are exploring the option of XML DB for processing a large number of files coming same day.
The objective is to parse the XML file and store in multiple relational tables. Once in relational table we do not care about the XML file.
The file can not be stored on the file server and need to be stored in a table before parsing due to security issues. A third party system will send the file and will store it in the XML DB.
File size can be between 1MB to 50MB and high performance is very much expected other wise the solution will be tossed.
Although we do not have XSD, the XML file is well structured. We are on 11g Release 2.
Based on the reading this is what my approach.
1. CREATE TABLE XML_DATA
(xml_col XMLTYPE)
XMLTYPE xml_col STORE AS SECUREFILE BINARY XML;
2. Third party will store the data in XML_DATA table.
3. Create XMLINDEX on the unique XML element
4. Create views on XMLTYPE
CREATE OR REPLACE FORCE VIEW V_XML_DATA(
Stype,
Mtype,
MNAME,
OIDT
AS
SELECT x."Stype",
x."Mtype",
x."Mname",
x."OIDT"
FROM data_table t,
XMLTABLE (
'/SectionMain'
PASSING t.data
COLUMNS Stype VARCHAR2 (30) PATH 'Stype',
Mtype VARCHAR2 (3) PATH 'Mtype',
MNAME VARCHAR2 (30) PATH 'MNAME',
OIDT VARCHAR2 (30) PATH 'OID') x;
5. Bulk load the parse data in the staging table based on the index column.
Please comment on the above approach any suggestion that can improve the performance.
Thanks
AnuragT

Thanks for your response. It givies more confidence.
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
TNS for Linux: Version 11.2.0.3.0 - Production
Example XML
<SectionMain>
<SectionState>Closed</SectionState>
<FunctionalState>CP FINISHED</FunctionalState>
<CreatedTime>2012-08</CreatedTime>
<Number>106</Number>
<SectionType>Reel</SectionType>
<MachineType>CP</MachineType>
<MachineName>CP_225</MachineName>
<OID>99dd48cf-fd1b-46cf-9983-0026c04963d2</OID>
</SectionMain>
<SectionEvent>
<SectionOID>99dd48cf-2</SectionOID>
<EventName>CP.CP_225.Shredder</EventName>
<OID>b3dd48cf-532d-4126-92d2</OID>
</SectionEvent>
<SectionAddData>
<SectionOID>99dd48cf2</SectionOID>
<AttributeName>ReelVersion</AttributeName>
<AttributeValue>4</AttributeValue>
<OID>b3dd48cf</OID>
</SectionAddData>
- <SectionAddData>
<SectionOID>99dd48cf-fd1b-46cf-9983</SectionOID>
<AttributeName>ReelNr</AttributeName>
<AttributeValue>38</AttributeValue>
<OID>b3dd48cf</OID>
<BNCounter>
<SectionID>99dd48cf-fd1b-46cf-9983-0026c04963d2</SectionID>
<Run>CPFirstRun</Run>
<SortingClass>84</SortingClass>
<OutputStacker>D2</OutputStacker>
<BNCounter>54605</BNCounter>
</BNCounter>
I was not aware of Virtual column but looks like we can use it and avoid creating views by just inserting directly into
the staging table using virtual column.
Suppose OID id is the unique identifier of each XML FILE and I created virtual column
CREATE TABLE po_Virtual OF XMLTYPE
XMLTYPE STORE AS BINARY XML
VIRTUAL COLUMNS
(OID_1 AS (XMLCAST(XMLQUERY('/SectionMain/OID'
PASSING OBJECT_VALUE RETURNING CONTENT)
AS VARCHAR2(30))));
1. My question is how then I will write this query by NOT USING COLMUN XML_COL
SELECT x."SECTIONTYPE",
x."MACHINETYPE",
x."MACHINENAME",
x."OIDT"
FROM po_Virtual t,
XMLTABLE (
'/SectionMain'
PASSING t.xml_col <--WHAT WILL PASSING HERE SINCE NO XML_COL
COLUMNS SectionType VARCHAR2 (30) PATH 'SectionType',
MachineType VARCHAR2 (3) PATH 'MachineType',
MachineName VARCHAR2 (30) PATH 'MachineName',
OIDT VARCHAR2 (30) PATH 'OID') x;
2. Insetead of creating the view then Can I do
insert into STAGING_table_yyy ( col1 ,col2,col3,col4,
SELECT x."SECTIONTYPE",
x."MACHINETYPE",
x."MACHINENAME",
x."OIDT"
FROM xml_data t,
XMLTABLE (
'/SectionMain'
PASSING t.xml_col <--WHAT WILL PASSING HERE SINCE NO XML_COL
COLUMNS SectionType VARCHAR2 (30) PATH 'SectionType',
MachineType VARCHAR2 (3) PATH 'MachineType',
MachineName VARCHAR2 (30) PATH 'MachineName',
OIDT VARCHAR2 (30) PATH 'OID') x
where oid_1 = '99dd48cf-fd1b-46cf-9983';<--VIRTUAL COLUMN
insert into STAGING_table_yyy ( col1 ,col2,col3
SELECT x."SectionOID",
x."EventName",
x."OIDT"
FROM xml_data t,
XMLTABLE (
'/SectionMain'
PASSING t.xml_col <--WHAT WILL PASSING HERE SINCE NO XML_COL
COLUMNS SectionOID PATH 'SectionOID',
EventName VARCHAR2 (30) PATH 'EventName',
OID VARCHAR2 (30) PATH 'OID',
) x
where oid_1 = '99dd48cf-fd1b-46cf-9983';<--VIRTUAL COLUMN
Same insert for other tables usind the OID_1 virtual coulmn
3. Finaly Once done how can I delete the XML document from XML.
If I am using virtual column then I beleive it will be easy
DELETE table po_Virtual where oid_1 = '99dd48cf-fd1b-46cf-9983';
But in case we can not use the Virtual column how we can delete the data
Thanks in advance
AnuragT

Hr related tables

hi all,
can anyone tell hr related table's or tcode name apart from po13,po10,su01 ,pa0105 and hrp1001 .
Regards
Alok

Your previous question on the same issue was deleted because you were too lazy to search and help yourself.
pk

How to updated matrix into related table?

hi, can anyone help me below coding how to updated matrix into related table?
Thank you.
            For rowNum = 0 To oMatrix.RowCount
                oRecordset.Fields.Item("Code").Value = oMatrix.Columns.Item("DSCode").Cells.Item(rowNum).Specific.Value
                oRecordset.Fields.Item("Name").Value = oMatrix.Columns.Item("DSName").Cells.Item(rowNum).Specific.Value
                oRecordset.Fields.Item("U_RPTC").Value = oMatrix.Columns.Item("DSReport").Cells.Item(rowNum).Specific.Value
                oRecordset.Fields.Item("U_USRC").Value = oMatrix.Columns.Item("DSUser").Cells.Item(rowNum).Specific.Value
                oRecordset.MoveNext()
            Next

For Fast Matrix Loading you can user some thing like this.
        Dim Column As SAPbouiCOM.Column
        Dim Matrix As SAPbouiCOM.Matrix
        Dim Table As SAPbouiCOM.DataTable
        Table = oForm.DataSources.DataTables.Add("Documents")
        Table.Columns.Add("Code", SAPbouiCOM.BoFieldsType.ft_Integer)
        Table.Columns.Add("Name", SAPbouiCOM.BoFieldsType.ft_Integer)
        Table.Columns.Add("U_RPTC", SAPbouiCOM.BoFieldsType.ft_AlphaNumeric, 255)
        Table.Columns.Add("U_USRC", SAPbouiCOM.BoFieldsType.ft_AlphaNumeric, 255)
        Matrix = oForm.Items.Item("MatrixUID").Specific
        Column = Matrix.Columns.Item("Code")
        Column.DataBind.Bind("Documents", "Code")
        Column = Matrix.Columns.Item("Name")
        Column.DataBind.Bind("Documents", "Name")
        Column = Matrix.Columns.Item("U_RPTC")
        Column.DataBind.Bind("Documents", "U_RPTC")
        Column = Matrix.Columns.Item("U_USRC")
        Column.DataBind.Bind("Documents", "U_USRC")
        Table.ExecuteQuery(SQLQuery)
        Matrix.LoadFromDataSource() 'Load The Data to the Matrix
To pull the data form the display back to the Table you can use this
Matrix.FlushToDataSource()

Populate PK(DBSequence) in three related tables with master detail association

Hi
I use jdeveloper 11.1.1.6.0.
My English isn't very good.
I have 3 tables with master detail association between them and primary key from table A should populate to tables B and finally C .The primary key is a sequence from data base and I set PK attribute in table A as a DBSequence. (table C is the child of table B and table B is the child of table A)
My association is like this: A->B(BAFk1Assoc) and B ->C(CBFk1Assoc) and also I select Composition Association for these two association. And I select ‘Cascade Update Key Attribute’
When I insert row in these three related tables, a negative number create but when I COMMIT the PK populate only to table B not to table C and the exception below raises:
Constraint "C_B_FK1" is violated during post operation "Insert"
ORA-02291: integrity constraint (HR.C_B_FK1) violated - parent key not found.
If I only work with tables A and B, there isn't any problem but if I add table C as the child of B, this exception raises.
Habib

The question is how you create the row for table C. Do you create it as child from table b (using the VO for B and using the link to C)?
In this case the framework should populate the PK of the master row B as FK in table C.
You may need to control the order in which the rows are posted to the DB to avoid this problem. Read Advanced Entity Object Techniques - 11g Release 1 (11.1.1.6.0) to get more info about this.
However, sometimes it's easier to control the generation and setting if the PK attributes in the model layer, not relating on db triggers where you get the real values only after the commit operation is done in the db. For this you can use a Groovy expression so you have access to the PK of each new created row right after creation. Read Using Groovy Expression to set a Primary Key with a Sequence Number | JDev &amp; ADF Goodies to find out how to do this.
Timo

Converting Relational Tables to Object Views

We have extra information stored for each
field in a table. We call these Vertical
Tables:
rowid primary key - ties to normal tab
column_name "" - ties to column in ""
text_value the value if text
reliability rating for level of accuracy...
date of entry
Yes there are normal tables that the applications also access if they just need the value of the columns.
So I want to take this to object views. This way, while oracle is learning how to alter objects, we can still maintain our data and old application while converting to the use of objects.
I thought the best solution would be Type(s) based on the orignal data type. A generic type, text65_t could be created to hold every column that is less than 65 characters long:
CREATE TYPE text65_t AS OBJECT
WITH OBJECT IDENTIFIER(row_id) AS
row_id VARCHAR2(30),
value VARCHAR2(65),
reliability NUMBER(1,0),
doe DATE
A view can easily be created of this. The
mapping is one to one.
My problem is the next level. How can I build another view on top of text65_t, integer_t, date_t... that ties all of the
vertical rows back into a normal relational table or object.
Thanks,
bill
null

Hi migration group,
I realize this is kind of off topic for
this discussion group. Where can I ask
questions like this?
thanks
bill

Question on using table types in methods

Hi
I have a simple question involving passing table types in method
I want to pass an internal table by reference - to a method and within the method populate the internal table (t1) using a select * into the internal table and then sort t1 by f1 and f2. t1 is an internal table based on a ABAP dictionary table ( at1 )
Question is : If I use a generic type TABLE declaration , it does not allow sort operation specifically by fields. If I use type at1 as in
the METHODS M1 exporting t1 type at1statement, syntax error is - t1 is not an internal table.
How do I achieve the above using the method implementation ?
Sample code that I try
CLASS C1 DEFINITION
PUBLIC SECTION
METHODS M1 exporting t1 type table
ENDMETHOD
ENDCLASS
CLASS C1 IMPLEMENTATION
METHOD M1
select * from at1 into t1.
sort t1 field f1 f2
ENDCLASS

You should define a TABLE TYPE based upon the data dictionary type (at1) either in the data dictionary using SE11 or in the TYPES section of the class.
Then define the parameter of this new type.
Cheers
Graham Robbo

How a relational table stores data

Hi,
Can anyone please tell me how a relational table stores data internally? I mean what happens internally when we insert a new row into table? Please give me link of PDFs that I needed to go through. What I want is to be able to write a code for Relational objects such as table. What kind of preparation is needed for this?
Please give your answer in detail. You may send me direct email at [email protected]
Quick answers are highly appreciated.
Thanks in advance !!!
Edited by: DataExpert on 01-Sep-2009 10:55

Hi,
Can anyone please tell me how a relational table stores data internally? I mean what happens internally when we insert a new row into table? Please give me link of PDFs that I needed to go through. What I want is to be able to write a code for Relational objects such as table. What kind of preparation is needed for this?
Please give your answer in detail. You may send me direct email at [email protected]
Quick answers are highly appreciated.You question is not clear what you want to know exactly.
With respect to relations tables you can get the information on google it self
http://livedocs.adobe.com/coldfusion/6.1/htmldocs/db_basi4.htm
http://en.wikipedia.org/wiki/Relational_database
I mean what happens internally when we insert a new row into table? Please give me link of PDFs that I needed to go throughRefer to : http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14220/memory.htm
the above links gives the idea of oracle memory architecture, then if we say some thing how it process then you can understand.
What I want is to be able to write a code for Relational objects such as table. What kind of preparation is needed for this? You need to know the SQL and PL/SQL , which enables you to handle the things.
Please give your answer in detail. You may send me direct email at [email protected]
Quick answers are highly appreciated.we are not hear to send email or to do the development things. We are spending some of our vauable time to help out and to learn some thing from forums. Sharing views and knowledge across. You must understand and we will be high appreciate that, f you do so.
HTH
sb92075 ,
- Pavan KumarN

Typed tables is treated in the same way as a relational table?

I'd like to know if the internal struct of oracle treats a typed table (table that contains object) in the same way of a relational table. For example, if I insert an object (that contains the atribute name as varchar2) into a typed table, and insert a regular register (name as varchar2) into a relational table, theoretically the execution time for both inserts must be the same? Thanks.

> I have written my comments from my experience.
I have used nested table with more 10+ levels with
more than 400+object types for our projects.
As you know bench mark is not done for 1 table or 1
object, it is done with major project usage .
In which case you're not benchmarking a specific feature, but the overall design of the system.
I too am using object tables for specific Oracle applications. And the advantages that this provide significantly outweigh the cons - and a single such application process in excess of a billion rows per month per object table per month.
> If you think Object is faster than relational tables
in oracle then JAVA MUST BE FASTER THAN 'C' Language.
Where did I say that object tables are faster than relational tables? How about trying to read what I said and then trying to understand what I conveyed?
I said that
a) objects tables are marginally slower than relational tables
b) this performance difference cannot be used as the primary deciding factor on whether to use object tables or not
As for your analogy that then "Java must be faster than C" is not relevant. Comparing apples with bananas. C is not C++. Java p-code is not machine code. So your analogy is meaningless and does not prove anything. Fact is that the speed of any programming language depends on numerous factors - and not just the language itself as you're are implying with this flawed analogy.
Besides, trying to compare ADTs in Oracle to Java Classes, is silly. These are different tools intended for different usage.
Bottom line - saying that ADTs and object tables in Oracle is "Bad" based purely on a marginal performance difference is idiotic. The design of the system and requirements of the system dictates the tools that are needed. And one of those tools can be and will be ADTs and object tables in certain cases.

Create XML (using DTD) from multiple relation tables

Hello and thank you in advanced.
I'm trying to create an XML document, based on a specific DTD, by selecting information from multiple tables in the database.
Is there a tool (in XDK maybe?) that will allow me to map my relational tables to a specific DTD?
I could build the XML manually, but I was hoping that Oracle has already solved this problem with an automated tool.
Thanks again,
Sean Cloutier

Is that the same thing as me writing an XSQL document which contains all of my queries (or views).
In other words, do I have to map everything by hand or is there a tool to do that for me?
thanks again,
Sean
null

Table and related table keys

Hi,
Have two tables, related, and wish to not use form / subform to handle relationship.
What is the best way to assign PK in primary table to FK in related table?
L
Leon

Have two tables, related, and wish to not use form / subform to handle relationship.
What is the best way to assign PK in primary table to FK in related table?
Hi Leon,
I don't know what the underlying thought of your question. And also why you do not wish to use the form / subform relationship. I think you mean the parent-child relation? In all my applications I do not use that parent-child relation either. In fact
what is normally used as a subform is in my systematics another main form. This gives me the possibility to "walk along relations" in a two-way direction, for any relation.
I am sure there are more best ways for the PK. For every table I use an autonumber PK. The FK in a related table is of type long. I have experienced that the shorter the key is, the faster the retrieval is. And the long type is in my opinion the
best.
Using a strict naming convention for the field of the PK related to its table, and the field of the FK, I have managed that all relations are generated completely automatic.
Imb.

Workflow related tables. Urgent. Please help.

Hi all,
 Could anybody please give me the list of workflow related tables ? I need to retrieve the following details.
 Type,
 Workflow Item ID,
 Workflow Item Unique ID, Text
 Creator, Created Date and Time,
 User created WI,
 Technical Status,
 Agent,
 Task ID, Task ID text,
 Element, Element Value.
Please let me know at the earliest. Thanks in advance.

I don't think this is the right place for this, but I will give one reply.
>What you think when a person is facing some issue will first read guidelines and then post.
Here is the <a href="https://wiki.sdn.sap.com/wiki/display/HOME/RulesofEngagement">link</a> to the guidelines. It is expected somebody first reads the guidelines and then starts posting, it is the first line in the guidelines. So I expect it also. I don't see why I should expect it from someone who has at least 30 points, and not from someone who has never posted.
About your analogy, it doesn't work because most of the time the functional consultant needs me to create the workflow, or he is part of the same project so we need each other. In this forum I spend my own precious time answering questions, and not for the points but because I want to contribute and help others. But I expect them to have tried to 'help' themselves first.
And as long as there is no moderator for the forum I will try to point people at the guidelines so this forum will not end up generating a lot of 'noise' and running of those who can help maybe the most (to name two: Kjetil Kilhavn and Mike Pokraka). I know they are thinking about skipping this forum because of the noise.
> Try to be a bit pragmatic. Will you do this to your peers or your junior.
Depending on the situation I will do this to my peers and juniors, mostly because they will learn more from finding things out by themselves than from pre cooked answers. And learning is one of the main objectives here.
And my remark about the points is because you keep asking for them.
I hope this clarifies a little why I post answers like the one I gave to this somewhat lazy question (not the first one today).
Martin

Databae Question - Specifically Relational Tables

Similar Messages

Maybe you are looking for