Difference Between JDBC and SQLJ

Can any one explain the difference in using JDBC and SQLJ with example codes_...

Oracle documentation can
http://download.oracle.com/docs/cd/B19306_01/java.102/b16018/overview.htm#i1006033

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Diff between jdbc and sqlj

hi friends
could u all pls try and explain me as to what is the diff between sqlj and jdbc.
are they same or different.
reg
prem

SQLJ let you embed SQL statements directly in the Java code - this is being converted into JDBC calls in pre-compile time.
Think of SQLJ as an abstraction layer on top of JDBC that let you work with SQL.

Difference betweeen JDBC and JRE

Hi,
What is basic difference between JDBC and JRE?
JDBC used to connect jdbc connections (Application users ) to Database .
We use JRE to access forms only... is that correct ?
Please clarify
-Thanks

HI Hussein,
Thanks for the reply.
Can you please provide more information or Docs , how Autoconfig uses JDBC ?
HusseinSawwan wrote:
Vijay.Cherukuri wrote:
Hi,
What is basic difference between JDBC and JRE?
JDBC used to connect jdbc connections (Application users ) to Database .
We use JRE to access forms only... is that correct ?
Please clarify
-Thanks
Correct. JDBC is used by AutoConfig as well.
Thanks,
Hussein

In jdbc adapter what is the difference between insert and update insert

in jdbc adapter what is the difference between insert and update insert
Edited by: katru vijay on Mar 22, 2010 7:43 AM

Please refer to this Link [Document Formats for the Receiver JDBC Adapter|http://help.sap.com/saphelp_nw04/Helpdata/EN/22/b4d13b633f7748b4d34f3191529946/frameset.htm]
Hope this helps.
Regards,
Chandravadan

Find the difference between loading and registering the drivers..

Dear Sir..
Could you please help me to find the difference between two activities..
1.Loading the drivers
2.Registering the drivers
What's the difference between loading and registeing the drivers and what activities take place by the JVM to do it all.

Dear Sir..
Could you please help me to find the difference
between two activities..
1.Loading the drivers
2.Registering the drivers
What's the difference between loading and registeing
the drivers and what activities take place by the JVM
to do it all.You load a class - it isn't specific to a driver.
That is part of java - not JDBC.
Normally JDBC drivers register themselves when the class is loaded. This is specific to the driver and has nothing to do with a user of the driver. It is only a concern to someone who must implement a driver.

What is the difference between struts and spring framework

What is the difference between struts and spring framework
Thanks in advance

Struts is nothing more than a web MVC framework.
Spring is lots more.
Spring has its own web MVC frameworks for both servlets and portlets. I think the Struts web MVC design is inferior to Spring's.
It also has JDBC and ORM support, message driven POJOs, an IoC engine, aspects, and lots more.
Struts would be a minor subset of Spring.
%

Difference between Null and null?

What is the difference between null and NULL?
When is each used?
Thanks,

veryConfused wrote:
There is a null in java, but no NULL. null means no value. However, when assigning value, the following is different:Although the empty String has no special role. Null means, the referential type is not assigned (doesn't refer) to a specific object. The empty String is just another object though, so seeing it or pointing it out as something special when it actually isn't at all (no more special than new Integer(0) or new Object[0]) just adds to the confusion.

Difference between GUI_UPLOAD and WS_UPLOAD

Hi,
Please make me clear about the difference between GUI_UPLOAD and WS_UPLOAD. In which cases we need to use these modules...??
Thanks,
Satish

I would suggest to always use the GUI_UPLOAD. I say this because this is the function module which is used in the GUI_UPLOAD method of the class CL_GUI_FRONTEND_SERVICES.   Really, you should probably use the class/method instead of the function module.
data: filename type string.
filename = p_file.
call method cl_gui_frontend_services=>gui_upload
         exporting
              filename                = filename
              filetype                = 'ASC'
         changing
              data_tab                = iflatf
         exceptions
              file_open_error         = 1
              file_read_error         = 2
              no_batch                = 3
              gui_refuse_filetransfer = 4
              no_authority            = 6
              unknown_error           = 7
              bad_data_format         = 8
              unknown_dp_error        = 12
              access_denied           = 13
              others                  = 17.
Regards,
Rich Heilman

Difference between char and varchar, also the difference between varchar2

Hi,
Can anyone explain me the difference between char and varchar, and also the difference between varchar and varchar2...

Varchar2 is variable width character data type, so if you define column with width 20 and insert only one character to tis column only, one character will be stored in database. Char is not variable width so when you define column with width 20 and insert one character to this column it will be right padded with 19 spaces to desired length, so you will store 20 characters in the dattabase (follow the example 1). Varchar data type from Oracle 9i is automaticlly promoted to varchar2 (follow example 2)
Example 1:
SQL> create table tchar(text1 char(10), text2 varchar2(10))
2 /
Table created.
SQL> insert into tchar values('krystian','krystian')
2 /
1 row created.
SQL> select text1, length(text1), text2, length(text2)
2 from tchar
3 /
TEXT1 LENGTH(TEXT1) TEXT2 LENGTH(TEXT2)
krystian 10 krystian 8
Example 2:
create table tvarchar(text varchar(10))
SQL> select table_name,column_name,data_type
2 from user_tab_columns
3 where table_name = 'TVARCHAR'
4 /
TABLE_NAME COLUMN_NAME DATA_TYPE
TVARCHAR TEXT VARCHAR2
Best Regards
Krystian Zieja / mob

The difference between Lion and Mountain Lion

Can some one explain to me the difference between Lion and Mtn Lion? I'm currently 10.6.8 Is it beneficiall for me to upgrade?

Mountain Lion is an enhanced version of previous OS X and so that is Mavericks.
About upgrading it all depends on what your needs are and if your hardware supports it.
System requirements for OS X Lion
System requirements for OS X Mountain Lion
OS X Mavericks: System Requirements
Please check also applications compatibility. From Lion onward, you cannot run PPC application.

The difference between N80 and N80IE ?

What is the difference between M80 and N80ie?

02-Jan-2007
07:45 PM
korngear wrote:
The Nokia N80 Internet Edition is a new version of this handset with the same hardware as the normal N80. It is due for release in Q4 of 2006 and will be available in Patina Bronze or Pearl Black, and has the following additional software included.
Yahoo Go! for Mobile
Flickr
Some Amazon Branded Software
'Download!' App management
Internet Telephone - SIP VOIP Frontend
WLAN Wizard
Gizmo VOIP - Gizmo Project VOIP Frontend.
\\en.wikipedia.org//
@Korngear
Thanks.
Could N80 be upgraded to N80IE?

The difference between SFP+ and X2

Dear Expert,
I need to know what is the difference between SFP+ and X2! and can I use SFP+ card and module instead of X2?
Thanks,
Mohammad Saeed

Hi,
They are both used for 10Gig interfaces. The difference is the connector type.
SFP+ is LC and X2 is SC.
You can not put an SFP+ into an X2 slot or X2 optic into a SFP+.
HTH

Difference between ok_code and sy-ucomm

Hi,
Can any one tell me the difference between ok_code and sy-ucomm

Hi,
Actually OK_CODE and SY-Ucomm are the same. But experts suggest use of OK code for following reason:
In each PAI event that a user triggers by choosing either a pushbutton on the screen or an element in a GUI status, the corresponding function code is placed into the system field SYST-UCOMM or SY-UCOMM and placed in the OK_CODE field (as long as the function code is not empty). Empty function codes are placed in neither the SY-UCOMM field nor the OK_CODE field.
In your ABAP programs, you should work with the OK_CODE field instead of SY-UCOMM. There are two reasons for this: Firstly, the ABAP program has full control over fields declared within it, and secondly, you should never change the value of an ABAP system field. However, you should also always initialize the OK_CODE field in an ABAP program for the following reason:
In the same way that the OK_CODE field in the ABAP program and the system field SY-UCOMM receive the contents of the corresponding screen fields in the PAI event, their contents are also assigned to the OK_CODE screen field and system field SYST-UCOMM in the PBO event. Therefore, you must clear the OK_CODE field in the ABAP program to ensure that the function code of a screen is not already filled in the PBO event with an unwanted value. This is particularly important when the next PAI event can be triggered with an empty function code (for example, using ENTER). Empty function codes do not affect SY-UCOMM or the OK_CODE field, and consequently, the old field contents are transported.

What is difference between abstraction and encapsulation ?

Hi,
I am trying to figure out the difference between abstraction and encapsulation but confused.
Both are used for data hiding then what is the exact difference ?
Thanks.

Tushar-Patel wrote:
I am trying to figure out the difference between abstraction and encapsulation but confused.
Both are used for data hiding then what is the exact difference ?This is the picture I have:
When you encapsulate something you get an inside and an outside. The outside is the abstraction. It describes how the encapsulated entity behaves viewed from the outside. This is also called the type. Hidden inside is the implementation. It holds detail information about how the type's behaviour is accomplished.
It's a very simplified picture but I think it's quite accurate and it works for me.

What is difference between Iterator and Collection Wrapper?

Hi all,
I dont understand the actual difference between Iterator and Collection Wrapper. I observed both are used for the same purpose. Could any one please let me know when to use Collection Wrapper and when to use Iterator??
Thanks,
Chinnu.

L_Kiryl is right.
Collections support global iteration (through collection->get_next( )) and local iteration (through iterator->get_next( )).
Each collection has a focus object. Initially, the first object has the focus.
Any global iteration moves the focus, which is published by the event FOCUS_CHANGED of the collection.
If you want to iterate on the collection without moving the focus (and without triggering timeconsuming follow-up processes) you can use local iteration. To do so, request an iterator object from the collection and use this to iterate.
And one more advantage of using iterator: it takes care of deleted entities. If you use global iteration then when you reach deleted entity it will be an exception. But there is no exception with iterator in the same situation.

Difference Between JDBC and SQLJ

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