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Database Object-Relational Developer's Guide, 11g Release 2 (11.2)

Database Object-Relational Developer's Guide - Contents

ContentsConventions What's New in Object-Relational Features? Oracle Database 11g Release 2 (11.2) New Features … in Object-Relational Features Oracle Database 11g Release 1 (11.1) New Features in Object-Relational … Features Oracle Database 10 g Release 1 (10.1) New Features in Object-Relational Features 1 … Introduction

Database SQL Language Reference, 11g Release 2 (11.2)

Data Types

Object TypesObject types are abstractions of the real-world entities, such as purchase orders, that application … programs deal with. An object type is a schema object with three kinds of components: A name, which … identifies the object type uniquely within that schema. Attributes, which are built-in types or

Database SQL Language Reference, 11g Release 2 (11.2)

Data Type Comparison Rules

Object ValuesObject values are compared using one of two comparison functions: MAP and ORDER. Both functions … compare object type instances, but they are quite different from one another. These functions must be … specified as part of any object type that will be compared with other object types. See Also: CREATE

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Schema Objects

About Object Dependencies and Object Invalidationstatic SQL to reference tables or views. An object that references another object is called a … dependent object, and an object being referenced is a referenced object. These references are established … at compile time, and if the compiler cannot resolve them, the dependent object being

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Schema Objects

Managing Object DependenciesThis section provides background information about object dependencies and object invalidation, and … explains how invalid objects can be revalidated. The following topics are included: About Object … Dependencies and Object Invalidation Manually Recompiling Invalid Objects with DDL Manually Recompiling Invalid Objects

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Space for Schema Objects

Dropping Unused Object StorageBeginning with Oracle Database 11 g release 2 (11.2.0.2), the DBMS_SPACE_ADMIN package includes the DROP_EMPTY_SEGMENTS procedure, which enables you to drop segments for empty tables and partitions that have been migrated from previous releases. This includes segments of dependent objects of the table, such as index segments, where possible. The following example drops empty segments from every table

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Space for Schema Objects

Obtaining Object Growth Trends, where each row describes the space use of the object at a specific time. The function retrieves the … function requires as input the following values: OBJECT_OWNER: The owner of the object. OBJECT_NAME … : The name of the object. PARTITION_NAME: The name of the table or index partition, is relevant … . Specify NULL otherwise.

Database SQL Language Reference, 11g Release 2 (11.2)

Database Object Names and Qualifiers

Database Object Naming RulesEvery database object has a name. In a SQL statement, you represent the name of an object with a … marks (\"). If you name a schema object using a quoted identifier, then you must use the double … quotation marks whenever you refer to that object. A nonquoted identifier is not surrounded by any … punctuation.

Database SQL Language Reference, 11g Release 2 (11.2)

Database Object Names and Qualifiers

Schema Object Naming ExamplesThe following examples are valid schema object names: last_name horse hr.hire_date \"EVEN THIS … Object Naming Rules\". The following example is not valid, because it exceeds 30 characters

Database SQL Language Reference, 11g Release 2 (11.2)

Object Access Expressions

Object Access ExpressionsAn object access expression specifies attribute reference and method invocation … be an object or REF column. If you specify expr, then it must resolve to an object type. When a … based on the sample oe.order_item_typ object type, and then shows how you would update and select from … the object

Database Administrator's Guide, 11g Release 2 (11.2)

Distributed Database Concepts

Schema Object Name Resolutionuser that issued the SQL statement, object resolution continues as if the remote user had issued the … rules: Type of Link Specified Location of Object Resolution A fixed user database link Schema specified … current user database link Current user's schema If the database cannot find the object, then it checks … public objects

Database SQL Language Reference, 11g Release 2 (11.2)

Database Object Names and Qualifiers

Schema Object Naming GuidelinesHere are several helpful guidelines for naming objects and their parts: Use full, descriptive, pronounceable names (or well-known abbreviations). Use consistent naming rules. Use the same name to describe the same entity or attribute across tables. When naming objects, balance the objective of keeping names short and easy to use with the objective of making names as descriptive as possible. When in

Database SQL Language Reference, 11g Release 2 (11.2)

Single-Row Functions

Large Object FunctionsThe large object functions operate on LOBs. The large object functions are: BFILENAME EMPTY_BLOB, EMPTY_CLOB

Database SQL Language Reference, 11g Release 2 (11.2)

Object Reference Functions

Object Reference FunctionsObject reference functions manipulate REF values, which are references to objects of specified … object types. The object reference functions are: DEREF MAKE_REF REF REFTOHEX VALUE See Also: Oracle … Database Object-Relational Developer's Guide for more information about REF data types

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Schema Objects

Managing Object Name ResolutionObject names referenced in SQL statements can consist of several pieces, separated by periods. The … following describes how the database resolves an object name. Oracle Database attempts to qualify … schema, the database searches for an object whose name matches the first piece of the object name … . If it does

Database SQL Language Reference, 11g Release 2 (11.2)

Database Object Names and Qualifiers

Database Object Names and Qualifiersprovides: Rules for naming database objects and database object location qualifiers Guidelines for naming

Database PL/SQL Language Reference, 11g Release 2 (11.2)

Overview of PL/SQL

Support for Object-Oriented ProgrammingPL/SQL supports object-oriented programming with \"Abstract Data Types\".

Database SQL Language Reference, 11g Release 2 (11.2)

AUDIT

Table 13-3 Schema Object Auditing OptionsObject SQL Operations Table ALTER AUDIT COMMENT DELETE FLASHBACK (Note 3) GRANT INDEX INSERT LOCK … COMMENT GRANT RENAME SELECT Directory AUDIT GRANT READ Library EXECUTE GRANT Object Type ALTER … , UPDATE, and DELETE operations only on updatable materialized views. Note 3: The FLASHBACK audit object

Database Administrator's Guide, 11g Release 2 (11.2)

Managing Tables

System and Object Privileges for External TablesSystem and object privileges for external tables are a subset of those for regular table. Only the … ANY TABLE SELECT ANY TABLE Only the following object privileges are applicable to external tables … : ALTER SELECT However, object privileges associated with a directory are: READ WRITE For external

Database SQL Language Reference, 11g Release 2 (11.2)

Syntax for Schema Objects and Parts in SQL Statements

References to Object Type Attributes and MethodsTo refer to object type attributes or methods in a SQL statement, you must fully qualify the … : CREATE TYPE cust_address_typ OID '82A4AF6A4CD1656DE034080020E0EE3D' AS OBJECT (street_address … an object table categories_tab, based on catalog_typ, which contains the member function