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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Data Fragmentation "Fragmentation includes decomposing the data in relation to non-overlapping component relations". Why do we require fragmenting a relation?
explain in details about one to one binary relationship
what is Mapping Constraints? with examples
define anomalies and different types of anomalies with example
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator. Altern
What is Interaction Diagram An interaction diagram shows an interaction, comprises of a set of objects and their relationships including the messages that may be dispatched be
What are the Overlapping elements Overlapping elements can be found by scanning all the elements in front of deleted element in priority list for the sheet and comparing them
What is the need for triggers? Triggers are useful mechanisms for alerting humans or for starting particular tasks automatically when particular conditions are met.
Explanation on Data Sharing?
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