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Problem:
(a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram.
(b) List and briefly describe five potential benefits of the database approach compared to conventional file systems.
(c) To address the issue of data independence, the SPARC/ANSI three level architecture was proposed. Compare and contrast the three levels of the model.
(d) Explain briefly the parts of the Relational Model.
Q. Explain data aggregatio n and discuss different design constraints. Sol. Aggregation One limitation of the E-R model is that it cannot express relationships amon
What are the two types of errors? The two types of errors are: a) Logical error b) System error
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
#questiontypes of keys examples..
Submit the SQL Statements necessary to create your database according to the following guidelines: Your SQL statements should exactly mirror your ERD. All primary keys,
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
(a) Explain briefly the three parts of a relational Model. (b) Contrast the following terms with an appropriate example: (i) stored attribute v/s derived attribute (ii) en
what is the need of a log in dbms
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
how to submit answers softcopy
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