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Describe different steps of the object-oriented design process.
The broad steps of the object-oriented design process are:
a. Define context and modes of use of the system
b. Design system architecture
c. Recognize the principal system objects
d. Identification of the concurrency in problem
e. Handling the boundary condition
f. Developing design models
g. Specify the object interfaces.
A Relation Schema represented by R(A1, A2, ..., An) is made up of the relation name the list of attributes and R Ai that it contains. A relation is described as a set of tuples
Using Column aliases Example: To print column names as NAME and ANNUAL SALARY SELECT ENAME "NAME", SAL*12 "ANNUAL SALARY" FROM EMP;
What is the meaning of Data Independence ?
Explain the Cartesian product: The Cartesian product operation does not need relations to union-compatible. The meaning of this is that the involved relations may have dissim
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Normal 0 false false false EN-IN X-NONE X-NONE
Locks: Serialisabilty is just a test whether a given interleaved schedule is ok or has a concurrency related trouble. Though, it does not make sure that the interleaved concurrent
UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
what is union compatable?
how design database from begining
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