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A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired to remain track of the players participating in each game of each team and the result of the game.
Create an ER diagram, completely with attributes, keys and constraints, for the above description. State any assumptions that you make.
What are three components of the schema architecture proposed by ANSI/SPARC? The three component schema architecture proposed by ANSI/SPARC is as given below: External sche
Consider the table student and list names of students in the departments other than maths and computer. SELECT std_name FRM student WHERE dept_name NOT IN (‘Maths','Computer);
Why is need for the multiple access paths?
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Which database object does not physically exist? A view database object does not physically exist.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Briefly describe concurrency execution? Lock - based protocols Locks There are several modes in which a data item may be locked in this section we restrict our attention
Critically explained the benefits and limitations of different database technologies with proper examples
What is a candidate key? Minimal super keys are known as candidate keys.
Create centralized relational database using bottom up method. (a) Recognize a single un-normalized relation for the above scenario. (b) Recognize the primary key for
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