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Give the limitations of SQL authorization.
The code for checking authorization becomes intermixed with the rest of the application code.
Implementing authorization by application code rather than specifying it declaratively in SQL makes it hard to make sure the absence of loopholes.
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
what are the main characteristics of database
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
explain exhausitively the problems associated with er diagrams with ellustrations
What is Relational Algebra? Relational algebra is a Procedural query Language?
give some example real life situation where DBMS are most suitable
Objectives After reading this unit you should be able to: Explain storage of databases on hard disks; Discuss the execution of various file Organisation techniques;
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Define the notation for classes and atrributes The notation for class, attribute, and operations are shown below: Figure: Class with attributes and operations A
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