Common Routines Supporting CLIv2 - Call-Level Interface Version 2

Teradata Call-Level Interface Version 2 Reference for Mainframe-Attached Systems
Product
Call-Level Interface Version 2
Release Number
15.00
Language
English (United States)
Last Update
2018-09-28
dita:id
B035-2417
lifecycle
previous
Product Category
Teradata Tools and Utilities

Common Routines Supporting CLIv2

The following common routines are used in most basic applications.

 

Routine

Description

DBCHINI

Initializes the DBCAREA, which is shared by an application and most CLIv2 routines. DBCHINI also does the internal initialization of CLIv2.

DBCHCL
  • Connects a session on Teradata Database (the database itself).
  • Checks that the logon was successful.
  • Ends the Connect request.
  • Sends Teradata SQL statements (for example, selects rows from a table).
  • Process the response (for example, obtains rows from table).
  • Ends the request.
  • Disconnects the session.
    		•

    DBCHCLN

    Cleans up after an application is finished using Teradata Database.

    When DBCHCLN is called and the return code is zero, data structures allocated internally during the calls to CLIv2 routines have been deallocated.

    For more information about CLIv2 routines, see Chapter 6: “Common Routines.”

    For information about routines that provide information about CLIv2, TDP, or Teradata Database, see Chapter 8: “CLIv2 Query Routine.”

    For information about CLIv2 routines that perform additional services, see Chapter 7: “Other CLIv2 Routines.”