By Raphaely D., Gregoire J.
The Oracle C++ name Interface (OCCI) is an software programming interface (API) that permits functions written in C++ to have interaction with a number of Oracle database servers. OCCI provides your courses the facility to accomplish the entire diversity of database operations which are attainable with an Oracle database server, together with SQL assertion processing and item manipulation.
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Extra info for Oracle C++ Call Interface. Programmer's Guide
Example text
For example, to repeatedly execute the same statement with different parameters, you specify the statement by the setSQL method of the Statement handle: stmt->setSQL(“INSERT INTO basket_tab VALUES(:1,:2)”); You may now execute this INSERT statement as many times as required. If at a later time you wish to execute a different SQL statement, you simply reset the statement handle. For example: stmt->setSQL(“SELECT * FROM basket_tab WHERE quantity >= :1”); Relational Programming 2-7 Types of SQL Statements in the OCCI Environment Thus, OCCI statement handles and their associated resources are not allocated or freed unnecessarily.
OTT has many benefits, including: ■ ■ Improving application developer productivity: OTT eliminates the need for application developers to write by hand the host language variables that correspond to schema objects. Maintaining SQL as the data definition language of choice: By providing the ability to automatically map Oracle database schema objects that are created by using SQL to host language variables, OTT facilitates the use of SQL as the data definition language of choice. This in turn allows Oracle to support a consistent, enterprise-wide model of the user’s data.
It stores and tracks objects which have been fetched by an OCCI application from the server to the client side. The client-side object cache is created when the OCCI environment is initialized in object mode. Introduction to OCCI 1-9 Object Support Multiple applications running against the same server will each have their own object cache. The client-side object cache tracks the objects that are currently in memory, maintains references to objects, manages automatic object swapping and tracks the meta-attributes or type information about objects.
Oracle C++ Call Interface. Programmer's Guide by Raphaely D., Gregoire J.
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