Oracle9i Application Developer's Guide - Object-Relational by Gietz B.

By Gietz B.

Oracle9i program Developer's consultant - Object-Relational good points is meant for programmers constructing new purposes or changing current purposes to run within the Oracle atmosphere. The object-relational gains are usually utilized in multimedia, Geographic info structures (GIS), and related purposes that take care of advanced information. the article perspectives function might be useful while writing new functions on best of an current relational schema.This consultant assumes that you've a operating wisdom of program programming and that you're conversant in using based question Language (SQL) to entry details in relational database structures.

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Object Type Translator The Object Type Translator (OTT) provides client-side mappings to object type schemas by using schema information from the Oracle data dictionary to generate header files containing Java classes and C structures and indicators. These generated header files can be used in host-language applications for transparent access to database objects. Client-Side Cache Oracle provides an object cache for efficient access to persistent objects stored in the database. Copies of objects can be brought into the object cache.

Default Values for Objects and Collections When you declare a table column to be of an object type or collection type, you can include a DEFAULT clause. This provides a value to use in cases where you do not explicitly specify a value for the column. The default clause must contain a literal invocation of the constructor method for that object or collection. A literal invocation of a constructor method is a call to the constructor method in which any arguments are either literals, or further literal invocations of constructor methods.

Automation interfaces in OO4O provide easy and efficient access to Oracle9i features and can be used from virtually any programming or scripting language that supports the Microsoft COM Automation technology. This includes Visual Basic, Visual C++, VBA in Excel, VBScript and JavaScript in IIS Active Server Pages. Introduction to Oracle Objects 1-7 Key Features of the Object-Relational Model 1-8 Oracle9i Application Developer’s Guide - Object-Relational Features 2 Basic Components of Oracle Objects This chapter provides basic information about working with objects.

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