January 2005
Beginner to intermediate
928 pages
22h 14m
English
(1) The alpha or numeric content of a field or variable.
(2) The smallest unit of data manipulated in SQL.
(3) A specific data item at the intersection of a column and a row.
A data element that specifies a value that can be changed.
A character, graphic, or binary string whose length is not fixed but can range within set limits. Also referred to as a varying length string.
The restoration of a previous version of the database, using an image that was created during a backup operation.
(1) A logical table that consists of data generated by a query. A view is based on an underlying set of base tables, and the data in a view is determined by a SELECT statement that is run on the base tables. ...
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