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Question :
Object-Oriented Database (OODM) is defined as a logical data model that captures the semantics of objects supported in object-oriented programming. An Object-Oriented Database or OODB is defined as a persistent and sharable collection of objects defined by an OODM.
(i) OODBMSs were developed due to some of the inadequacies of the existing database technology. One of the inadequacies refers as Impedance mismatch problem. Explain what is meant by impedance mismatch, in the context of relational database system.
(ii) Give example of Four Advanced Database Applications and discuss their general characteristics. Explain why these applications are not suitable for a relational database.
(iii) Define each of the following concepts in the context of an object-oriented data model:
a. Abstraction. b. Objects and attributes. c. Methods and messages. d. Classes, subclasses and superclasses.
Explain the term- signal-to-noise ratio A signal-to-noise ratio of 20 dB means that S/N = 100. As log2101 is around 6.658, the Shannon limit is around 19.975 kbps. The Nyquist
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Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
Data Redundancy -A lot of information is being repeated in the relation. For instance, the information that MCS-014 is named SSAD is repetitive, address of Rahul is "D- 27, Main ro
Problem : (b) A deductive database system is essentially the outcome of applying mathematics logic to database management, where logic is used for both data representation and
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
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The PROJECT operation The project operation is used to choose the records with specified attributes as discarding the others based on some related criteria. This is denotes as ∏
how to write a in a text and load it on mysql
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