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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t
Normalize the given relation to 3NF, justifying each step
#question. Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the
Describes the several relationship constraints through giving suitable example? Constraints on relationships: There are two kinds of constraints on relationships. 1) Mapping
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
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