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Explain Superkey Ans: A superkey is described in the relational model of database organization like a set of attributes of a relation variable for which it holds that in all re
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
give me a diagram about physical or internal level
Describe the static hash file with buckets and chaining and show how insertion, deletion and modification of a record can be performed. In static hash file organization, the wo
What is property - properties of a database ? It is an integrated collection of logically related records. It consolidates separate files into a common pool of data records and
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
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
sy bcs project of hospital managment system
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