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In computer programming, an enumerated type (also called enumeration, enum, or factor in the R programming language, and a categorical variable in statistics) is a data type consisting of a set of named values called elements, members, enumeral, or enumerators of the type.
PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL.
When an enumeration is used in an ordered list context, we impose some sort of ordering structure requirement on the index set.While we can make the requirements on the ordering quite lax in order to allow for great generality, the most natural and common prerequisite is that the index set be well-ordered.
Oracle has its own spin where creating a user is synonymous with creating a schema. Thus a database administrator can create a user called PROJECT and then create a table PROJECT.TABLE. Users can exist without schema objects, but an object is always associated with an owner (though that owner may not have privileges to connect to the database).
ENUM or enum may refer to: E.164 Number Mapping, a suite of protocols to unify the telephone system with the Internet; An enumerated type, a data type consisting of a ...
C++ is also more strict in conversions to enums: ints cannot be implicitly converted to enums as in C. Also, enumeration constants (enum enumerators) are always of type int in C, whereas they are distinct types in C++ and may have a size different from that of int. [needs update] In C++ a const variable must be initialized; in C this is not ...
Enumeration reducibility is a form of positive reducibility, in the sense that the oracle machine receives information about which elements are in B (positive information), but no information about which elements are not in B (negative information). Indeed, if an element has not been listed yet, the oracle machine cannot know whether it will be ...
enum (added in J2SE 5.0) [4] A Java keyword used to declare an enumerated type. Enumerations extend the base class Enum. extends Used in a class declaration to specify the superclass; used in an interface declaration to specify one or more superinterfaces.