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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Java program for horrizontal fragmentation in distributed database
These are the binary operations; i.e., each is applied to two relations or sets. These two relations can be union compatible excluding in case of Cartesian product. Two relations R
A customer places orders for parts and belongs to a particular industry group. An individual order is taken by a particular sales representative on a specific date and the sales re
State about the Activity Diagram Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
What is meant by computing the closure of a set of functional dependency? The closure of F denoted by F + is the set of functional dependencies logically implied by F.
Can we delete data element, which is being used by table fields. No we cant delete data element.
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Multilevel Index The Multilevel Index is a modification of the secondary level index system. In this system we might be use even more number of levels in case the table is eve
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