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

Part Number E11822-04
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ADOBJ7609

Glossary

ADOBJ7610

atomically null object

An object whose value is NULL is called atomically null. An atomically null object is different from an object that has null values for all its attributes.

ADOBJ7611

Binary Large Object (BLOB)

A large object data type whose value consists of raw binary data.

ADOBJ7612

character large object (CLOB)

The large object (LOB) data type whose value is composed of character data corresponding to the database character set.

ADOBJ7613

column object

An object that is stored as a column of a relational database table (as opposed to an object table). A column object can also be an attribute of another object. A column object is also known as a stored inline object or an embedded object.

ADOBJ7614

embedded object attribute

An attribute of a column object.

ADOBJ7615

dynamic method dispatch

A method call that is dispatched at run-time to the nearest method implementation when there are multiple implementations of the same method using overriding.

ADOBJ7616

index-organized table IOT

A table organized by its index.

ADOBJ7617

leaf-level scalar object

An object that is not a collection and is not composed of other types.

ADOBJ7618

leaf-level scalar attribute

An attribute of a leaf-level scalar object.

ADOBJ7619

literal invocation

An invocation where all arguments are literals or invocations of literal methods. Arguments cannot be variables.

ADOBJ7620

materialized view

A view that contains both the query and its results.

ADOBJ7621

multilevel collection type

Ccollection types whose elements are collection types, either directly or indirectly.

ADOBJ7622

multiset operators

An operator that combines elements of two nested tables into a single nested table.

ADOBJ7623

nested table

An unordered set of data elements of the same data type.

ADOBJ7624

normalize

The process of removing redundancy in data by separating the data into multiple tables.

ADOBJ7625

object column

A column of user-defined types or abstract data types (ADT)s .

ADOBJ7626

object identifier

Identifier for a row object which can be either system-generated (default) or based on a primary key using the CREATE TABLE statement.

ADOBJ7627

object instance

An instance of an object type. Also referred to as an object.

ADOBJ7628

object table

A table in which each row represents an object. See row object.

ADOBJ7629

object type

The type of the object instance. It is similar to a record that has methods. Object types are user-defined.

ADOBJ7630

outer table

A table that contains a nested table.

ADOBJ7631

pinning

Fetching.

ADOBJ7632

PL/SQL

The Oracle procedural language extension to SQL.

ADOBJ7633

polymorphism

Allows handling data types and methods generically using the same interface. In polymorphic overriding, subtypes redefine a method they have inherited. In polymorphic overloading, there may be several versions of the same method, with different parameters.

ADOBJ7634

primary key

The column or set of columns specified in the PRIMARY KEY constraint of a table.

ADOBJ7635

REF

An Oracle built-in data type that encapsulates references to row objects of a specified object type.

ADOBJ7636

row object

An object that is stored in a complete row in an object table.

ADOBJ7637

specializing

Adding new attributes or methods to a subtype that the parent supertype does not have, or changing the implementation of a method or methods.

ADOBJ7638

stored procedure

A PL/SQL block that is stored in the database and can be executed from an application.

ADOBJ7663

substitutability

A supertype is substitutable if one of its subtypes can substitute or stand in for it in a variable or column whose declared type is the supertype.

ADOBJ7639

type evolution

The modification of a subtype of a type, typically using an ALTER statement.

ADOBJ7640

VARRAY

An ordered set of data elements, that are of the same data type or a subtype of the declared data type.

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