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The primary key is selected from the
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
What are the disadvantages of relational data ? Disadvantages • Performance - If the number of tables among that relationships to be established are large and the tables t
a method named WonGame that checks each letter in the word is matched by its label
Let us first look into some of the important features of ER model. Entity relationship model is a high-level conceptual data model. It permits us to define the data invo
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
WHAT IS DSS? WRITE ITS REQUIREMENTS.
How does the two phase protocol ensure serializability in database schedules? Ans: A transaction is termed to follow the two-phase locking protocol if all locking operations
what is the need of a log in dbms
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