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List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
how does Btree differ from a B+ - tree?
The File Based System File based systems are an early attempt to computerise the manual filing system. For example, a manual file can be set up to hold all the correspondence r
does tables are called relations
How can we Classify the operations on classes This step fundamentally means all three models functional, object and dynamic (studied in last section) must be combined so that
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Differentiate between horizontal & mixed horizontal fragmentation?
Index And Tree Structure Let us talk about the data structure that is used for creating indexes. Can we use Binary Search Tree (BST) as Indexes? Let us initial reconsider
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