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Determine the Advanced modeling concepts
You have to follow some steps for object-oriented design.
These steps for OO Design methodology are as follow:
1) Produce object model
2) Produce dynamic model
3) Produce functional model
4) Define an algorithm for major operation
5) Package and Optimize.
These are the binary operations; i.e., each is applied to two relations or sets. These two relations can be union compatible excluding in case of Cartesian product. Two relations R
Explain Domain calculus Domain calculus is one of the types of the relational calculus. The formal specification of the domain calculus was planned after the development of the
What is primary Key Explain? Primary Key - Primary key is one of the candidate keys. It should be selected such in which its attribute values are never, or very rarely, chang
PRINCIPLES OF DATABASE 1. State the following terms: a) Database b) Database Management System c) Entity d) Attribute e) Relationship 2. Discuss the Three Level Architecture
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Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
Explain Growing Phase of locking Growing Phase: In this phase the transaction can only obtain locks, but cannot release any lock. The transaction enters the growing phase as so
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
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
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