Stored procedures are routines executed directly by a DB2 LUW Server instance , rather than indirectly via a call to a routine from within a client application. The benefits of using DB2 stored procedures over SQL calls include enhanced modularity, security, and performance.
What is a DB2 stored procedure?
A stored procedure is a compiled program that can execute SQL statements and is stored at a local or remote DB2 ® server. ... A stored procedure provides a common piece of code that is written only once and is maintained in a single instance that can be called from several different applications.
What is DB2 COBOL?
COBOL-DB2 applications are those applications that include both COBOL and DB2. Embedded SQL statements work like normal SQL statements with some minor changes. For example, the output of a query is directed to a predefined set of variables which are referred as Host Variables.
What is COBOL procedure?
COBOL procedures are to be written in a similar manner as COBOL subprograms . Handling parameters in a COBOL procedure. Each parameter to be accepted or passed by a procedure must be declared in the LINKAGE SECTION.
How call native stored procedure from COBOL?
- EXEC SQL CALL ORDERSTAT (:WS-ORDER-ID, :WS-ORDER-STATUS) END-EXEC. ...
- CREATE PROCEDURE ORDERSTAT ( IN ORDER-ID int, OUT ORDER-STAT char)
Where are stored procedures stored in DB2?
DB2 Stored Procedures
As we have seen above, a stored procedure is a compiled program that can execute SQL statements. Stored procedures are stored at a local or remote DB2 LUW Server . Local DB2 LUW Server applications or remote DRDA applications can use the SQL statement CALL to invoke a stored procedure.
Does DB2 support stored procedures?
Db2 provides some stored procedures , but you can also create your own. A stored procedure provides a common piece of code that is written only once and is maintained in a single instance that can be called from several different applications.
What is the difference between include and copy in COBOL?
A COPY statement can appear in the source text anywhere a character string or a separator can appear. The INCLUDE statement inserts declarations or statements into a source program. The INCLUDE statement inserts declarations or statements into a source program.
How a COBOL DB2 program is executed?
The DBRM is bound to the DB2 region (environment) in which the COBOL will run. This can be done using the IKJEFT01 utility in a JCL. After the bind step, the COBOL-DB2 program is run using IKJEFT01 (again) with the load library and DBRM library as the input to the JCL.
What database does COBOL use?
DB2 is similar to the SQL but has some advanced features and is primarily used for storing large amounts of Mainframe application data. In the context of Database Interface, COBOL includes the following terms: Embedded SQL. DB2 Application Programming.
What is 77 level used for in COBOL?
77 Level Number Uses, significance:77 is a special Level number in COBOL which is used to declare the Individual Elementary data items . Of course, Individual elementary data items can be declared using 01 level but 77 declared fields does not allow any sub ordinate data field declarations.
What is FD in COBOL?
Sample COBOL Program to show how the file is defined in INPUT-OUTPUT Section . ... FD stands for File Description which describes the layout of all the files which are used in the program.
What are the four division in COBOL?
With the exception of the COPY and REPLACE statements and the end program marker, the statements, entries, paragraphs, and sections of a COBOL source program are grouped into the following four divisions: IDENTIFICATION DIVISION . ENVIRONMENT DIVISION . DATA DIVISION .
How do you call a stored procedure in mainframe?
Invoking Stored Procedures:
In mainframes environment, A stored procedure can be invoked from an application program USING A CALL or it can be invoked from the Command Line. Parameters can be supplied to the above SP if they are declared while creating SP.
How do I create a stored procedure in DB2?
Set up the workbench environment for stored procedure development. Connect to the GSDB sample database and create a data development project to work with the database. Create an SQL stored procedure. Deploy, debug, and run the stored procedure from the workbench.
What are the features of stored procedure?
Executable code is automatically cached and shared among users. This lowers memory requirements and invocation overhead. By grouping SQL statements, a stored procedure allows them to be executed with a single call . This minimizes the use of slow networks, reduces network traffic, and improves round-trip response time.
