Examlex
Depending on the DBMS,when changing the minimum cardinality on the parent side from zero to one,the foreign key constraint that defines the relationship may have to be dropped before the change is made and re-added afterwards.
Cyclical Theory
A theory suggesting that events or phenomena occur in predictable cycles, often applied to economics and history.
Conflict Theory
A sociological perspective that views social life as a competition for scarce resources, emphasizing the role of power and inequality in causing social conflict and change.
Value-Added Theory
A sociological theory related to social movements, suggesting that certain conditions must be met for collective behavior to emerge, leading to social change.
White Racism
A form of racism that privileges white people over those of other racial backgrounds.
Q1: Whether or not an attribute is required
Q6: A surrogate key is appropriate when the
Q11: For a Web server running the Windows
Q45: ODBC works with table-like data sources such
Q49: Changes in the database structure usually involve
Q50: We have done an RFM analysis on
Q55: If the values in an SQL view
Q56: If a server is using a Microsoft
Q78: It is easy to enforce the referential
Q96: An entity class is described by the