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For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of
HOW MANY TYPES OF VIEWS
Improved performance: As the data is located near the site of its demand, and given the inherent parallelism because of multiple copies, speed of database access may be good for di
examples of fields in a database
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
Properties of a Transaction A transaction has four main properties. These are: Atomicity Consistency Isolation or Independence Durability or Permanen
Horizontal Fragmentation- Horizontal fragmentation groups together the tuples in a relation that are collectively used by the main transactions. A horizontal fragment is produced b
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Two Phase Locking (2PL) The two-phase locking protocol having of two phases: Phase 1 : The lock acquisition phase : If a transaction T needs to read an object, it wants to
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
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