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What are the properties in a relation ?
In a relation Ordering of rows is immaterial and No two rows are identical.
What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
What is a heterogeneous distributed database? In a heterogeneous distributed database, dissimilar sites may use different schemas, and dissimilar dbms s/w. The sites may not be
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
what do you understand by enhanced entity-relationship
prototype of a distributed information system for a national car part retail outlet chain.
Explain controlled redundancy? Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
explain various steps uses in evaluation and maintenance of MIS.
Differentiate between horizontal & mixed horizontal fragmentation?
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
3NF Normal Form A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true X is a Super-key of R. A is a prime attribute of R
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