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Structure Of Distributed Database: A distributed database system haves of a collection of sites, each of which keeps a local databases system. Every site is able to process local
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
What is DML compiler? DML Compiler: Translates DML statements in a query language within low level instructions understandable through the query evaluation engine. Attempts to
What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Explain the Strategy of Database Planning ?
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
Explain the concepts of relational data model? Relational Data Model - The relational model was first introduced through Prof. E.F. Codd of the IBM Research in the year 1970
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
One-way Associations When an association is traversed only in the one direction, then it is implemented as a pointer i.e.an attribute which contains an object reference. If mu
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