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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
1. Which relational algebra operations do not need the participating tables to be union-compatible? Ans: Join is the relational algebra operations that do not need the particip
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
Explain nested relations? Nested relations The assumption of INF is a natural one in the bank examples we have considered. However, not all applications are best modelled
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
What is schema
why are older data base model are being replaced by new data model
The traffic data mgmt. systems infrastructure plan describes the software, hardware, data network, and other elements that will support the TDMS. The infrastructure plan is based o
Define functional and multivalued dependencies. Ans: A functional dependency is a assets of the semantics of the attributes in a relation. The semantics point out how at
i need to implememnt a treee based mining algorithm. do you have an expert that can do that?
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