Created by: paul01234
Number of Blossarys: 51
It is a single data item related to or describing a database object or entity. A database entity may have one or more attributes in accordance to the database schema.
It is a combination of attributes that can be used to uniquely identify a database entry. Each table in a database may have one or more candidate keys. In case of multiple candidate keys, one of them ...
This refers to the property of a transaction in which two or more computing processes are being executed simultaneously. Database concurrency ensures that transactions happen in an ordered manner.
Refers to the basic kind of data stored in a column. Examples of data types that could be stored in the database are char, varchar, Boolean, integer, date, time, and blob.
This term refers to any distinctly identifiable item in a database. This may refer to people, locations, or goods, to name a few.
A set of attributes in a referencing relation. The value of the foreign key attributes are sure to occur as the primary key value of a row or tuple in the referenced relation or table.
This refers to the collection of information stored in the database at a specific time or moment. A new instance is created when information is inserted, deleted, or updated in the database.