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Introduction to the Teradata® RDBMS for UNIX® Version 2 Release 2.1 - NCR

NCR Introduction to the Teradata® RDBMS for UNIX® Version 2 Release 2.1 - NCR, 1998. - 315 p.
Download (direct link): inntroduktionteradata1998.pdf
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statement A Preprocessor statement, Teradata SQL statement, COBOL statement, C statement, or PL/I statement.

statement A request for processing by the Teradata RDBMS that consists of a keyword verb, optional phrases, operands and is processed as a single entity.

Introduction to the Teradata RDBMS for UNIX


step A unit of work that does some or all of the processing of a single Teradata SQL statement. A step is created by the Parser and sent to the AMPs by the Dispatcher. Steps for a given statement are parallel processed. As many as 20 steps from a request can be executed at the same time.

success A parcel that is returned from every Teradata SQL statement that executes to normal completion.

Supervisor Window A window that runs under the Database Window on a system console that allows the user to control Teradata RDBMS applications.

supervisory user In Data Dictionary, a user who has been delegated authority by the administrator to further allocate Teradata RDBMS resources such as space and the ability to create, drop, and modify users within the overall user community. Cf: end user, administrator.

system console A workstation that offers a user interface to system management functions. These include administration, operation, installation, and maintenance of the system. See also: backup system console, master system console.

System Management Window A system console window that allows invocation of any system console application, such as the Database Window.

system view In Data Dictionary, a view that permits end users, supervisory users, and administrators to get appropriate information about databases, macros, tables, users, views, and their relationships.

table In Teradata SQL, a set of one or more columns with zero or more rows that consist of fields of related information. See also database.

TDP See Teradata Director Program.

Tera A prefix that means “trillion” (1,000,000,000,000).

Teradata Database System (DBS) Teradata RDBMS software that manages database functions. It provides the Teradata parallel SQL implementation made available with virtual processors The RDBMS is a Trusted Parallel Application.

Teradata Structured Query Language (Teradata SQL) A multipurpose database language used for defining, manipulating, controlling, loading, and archiving data.

Teradata RDBMS See Teradata Relational Database Management System.

Teradata Director Program (TDP) A program that manages communication between application programs and the Teradata RDBMS. It is a part of the Host System Communication Interface.


Introduction to the Teradata RDBMS for UNIX

Teradata SQL See Teradata Structured Query Language.

Teradata SQL statement A statement in the Teradata SQL language that is processed by the Teradata RDBMS.

title. In Teradata SQL, a string used as a column heading in a report. By default it is the column name, but a title can also be explicitly declared by a TITLE phrase.

transaction A set of Teradata SQL statements that is performed as a unit. Either all of the statements are executed normally or else any changes made during the transaction are backed out and the remainder of the statements in the transaction are not executed.The Teradata RDBMS supports both ANSI and Teradata transaction semantics.

Trusted Parallel Application (TPA) An application system, such as the Teradata RDBMS, that uses the parallelism made available with virtual processors and UNIX. The TPA has access to the Parallel Database Extensions (PDE) that provide parallel processing capability. A TPA can consist of more than one program if the various programs are coordinated in their use of operating system facilities.

type An attribute of a column that specifies the representation of data values for fields in that column. Teradata SQL data types include numerics and strings.

unique In Teradata SQL, a property of an index that specifies that two rows of a table are not allowed the same key value for that index. The default is non-unique, which permits duplicate keys.

UNIX An open operating system developed by Bell Laboratories that features multiprogramming in a multi-user environment. Teradata release 2 systems use UNIX System V, Release 4 MP-RAS.

update operation In Teradata SQL, an operation that alters the contents of a database, such as an INSERT, DELETE, or UPDATE data manipulation statement.

user In Teradata SQL, a database associated with a person who uses the Teradata RDBMS. The database stores the person’s private information and accesses other Teradata databases.

user-to-TDP communication technique One of the ways in which application software communicates with the Teradata Director Program. Techniques include: SVC and commonly addressable utility routines (under MVS); IBM Cross Memory Services routines and routines that reside in common storage (under MVS); InterUser Communication Vehicle (under VM).
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