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IEFBR14 was created because while DD statements can create or delete files easily, they cannot do so without a program to be run due to a certain peculiarity of the Job Management system, which always requires that the Initiator actually execute a program, even if that program is effectively a null statement. [2]
For example, in address book software, the basic storage unit is an individual contact entry. As a bare minimum, the software must allow the user to: [6] Create, or add new entries; Read, retrieve, search, or view existing entries; Update, or edit existing entries; Delete, deactivate, or remove existing entries
A Generation Data Group [10] (GDG) [11] is a group of non-VSAM data sets [12] that are successive generations of historically-related data [13] stored on an IBM mainframe (running OS or DOS/VSE). [14] A GDG is usually cataloged. [13] An individual member of the GDG collection is called a "Generation Data Set."
1. Mouse over the folder you want to add a subfolder to. 2. Click the Folder Options icon . 3. Select Create subfolder. 4. Enter a new subfolder name. 5. Click the Save icon.
The Access Method Services utility program IDCAMS is commonly used to manipulate ("delete and define") VSAM data sets. Custom programs can access VSAM datasets through Data Definition (DD) statements in Job Control Language (JCL), via dynamic allocation or in online regions such as in Customer Information Control System (CICS).
In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas. Common examples of DDL statements include CREATE, ALTER ...
My reading of Section 9.1.2 is that a PUT can result either in a create or a replacement of a record (eg a delete followed by an insert). Also, a POST may result in a combination of any of insert, update and delete. The fundamental difference in the semantics between the HTML verbs and the database verbs is that a database verb expects the ...
In the first example, GRANT gives privileges to user User1 to do SELECT, INSERT, UPDATE and DELETE on the table named Employees. In the second example, REVOKE removes User1's privileges to use the INSERT command on the table Employees. DENY is a specific command.