For some relations, changing the data can have undesirable consequences called:

Related MCQs

• A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called
• A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called
•              is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• ………………… is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• ………………… is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• Department (dept name, building, budget) and Employee (employee_id, name, dept name, salary) Here the dept_name attribute appears in both the relations. Here using common attributes in relation schema is one way of relating ___________ relations.
• Department (dept name, building, budget) and Employee (employee_id , name, deptname,salary) Here the dept_name attribute appears in both the relations .Here using common attributes in relation schema is one way of relating ___________ relations.
• Which data model organizes the data in the form of tables and relations?
• The system has entered an undesirable state (for example, deadlock), as a result of which a transaction cannot continue with its normal execution. This is
• In the schema (dept name, size) we have relations total inst 2007, total inst 200Q:8) Which dependency have lead to this relation ?