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Describe Database state in details?
Database state: The actual data within the database at a particular moment in time is known as a database state.
What do you mean through integrity constraints? Integrity Constraints -An integrity constraint is a condition specified on a database schema and restricts the data in which
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. T
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
what are the type of the database
why data in an RDMS need to be normalised
The Concurrent Transactions Almost every commercial DBMS support multi-user environment. Therefore, allowing multiple transactions to proceed concurrently. The DBMS must make
Oracle & Distributed Databases 1. Differentiate between PL/SQL functions and procedures. 2. Draw the diagram of logical structure of oracle database and explain it in brief.
What are wait-for-graphs?Give the algorithm to construct a wait-for-graph from a given schedule of transactions? How can deadlocks be detected from wait-for-graphs? Ans: The
various techniques of hashing?
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