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Probelm:
a) In the context of OODBMS, define the following terms with appropriate examples.
(i) Object class. (ii) Abstract class. (iii) Aggregation. (iv) Overriding.
b) Parallelism deals with the issue of processing two or more activities in parallel.
(i) Flynn's taxonomy uses the relationship of program instructions to program data. Explain briefly on any one category of the Flynn's classification. Support your answer with appropriate diagram.
(ii) Distinguish between multiprocessing systems and multiprogramming systems. Support your answer with appropriate diagram.
(iii) Explain briefly any two needs of parallel database.
(iv) Briefly explain three advantages of parallel database.
What are the uses of the information in the Data dictionary? The following information is directly taken from the Data dictionary: Information on fields displayed with
Consider the relations City (city_name, state) Hotel (name, address) City_hotel (hotel_name, city_name, owner) Answer the following queries in relational algebra (i) Find
Define According to the levels of abstraction, the schema at the intermediate level is called Ans: As per to the levels of abstraction, the schema at the intermediate level is
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
Company Database: a-)Here is the ER Model b-)Here is the Relational Model: IMPORTANT NOTICE FOR SOLUTION TYPE: ***THIS ASSIGNMENT WILL BE SOLVED BY THE
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
Write short notes on Schema diagram. A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema diagram. Every relation appea
Explain the three data models namely relational, network and hierarchical and evaluate their relative advantages and disadvantages. Hierarchical Model: In hierarchical model, da
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
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