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Q


QMRC A system call that allows low-level data transfer over the Message-based Reliable Channel.

qualifier A command modifier that describes the operation of a command. See also parameter.

queried record Any record that could be committed to the database from a base table block.

query (1) A SQL SELECT statement that retrieves data, in any combination, expression, or order. Queries are read-only operations; they do not change any data, they only retrieve data. Queries are often considered to be DML statements. (2) In SQL*Forms, an operation that selects a set of rows from the table associated with the current block and allows you to fetch the records into the workspace.

query field A field on a screen that the user may enter solely for the purpose of qualifying a query on the database.

query language Defined syntax for the specification of queries. Language employed by the user to specify search criteria.

query length In SQL*Forms, the number of characters that can be placed in a field when entering search criteria.

query mode In SQL*Forms, a special mode in which field-level triggers are executed when a record is retrieved into the workspace.

query name (1) (Query and Group definition) A name that identifies the query to be referenced in group settings. (2) In SQL*TextRetrieval, the name that identifies the query.

query optimization The process of choosing the best access path to satisfy a query (fetch the desired data). The optimizer evaluates the query's wording to see which indexes can be used, and chooses the best possible path to the data.

query path See access path.

query record group A record group whose columns and rows are derived from a SELECT statement against the database. A query record group can be defined at design time or programmatically

query view A database view created by Oracle Data Browser for each complete query stored in the database. See also query and view.

query window The Oracle Data Browser window you use to select data sources and enter conditions and functions to build a query. The query window contains the conditions panel and data sources panel. Contrast with results window.

queue A file that stores requests until the system is ready to process them.

quick build See incremental development.

quit (File menu) Option that terminates a session and returns the user to the operating system. On some systems, Quit is Exit.

quota A limit on a resource, such as a limit on the amount of database storage used by a database user. A DBA can set tablespace quotas for each ORACLE username.




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