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What is data integrity?
Ans: It is the data consisted of in database that is accurate and consistent.
(Data integrity means that the data should be valid as per to the given constraints. Hence, the data is accurate and consistent.)
Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
While sorting, if the main storage available is not enough, the system writes data to an external help file. The SAP profile parameter, which determines DIR_SORTTMP
Explain the Log Based Recovery Method? The system log that is generally written on stable storage consists of the redundant data required to recover from volatile storage failu
Create a Student database and Retrieve the names of all students majoring in ‘CS' Consider the following relational database: STUDENT (name, student#, class, major) COURSE (co
Multiple-mode locks : It offers two locks: exclusive locks and shared locks. But why do we require these two locks? There are a lot of transactions in the database system that neve
QUESTION (a)(i) Define the term database. (ii) How is it different from a database management system? (b) What is the difference between an entity and an attribute? (c
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Illustrate how you can use QBE to perform logical AND and OR operation
I have a homework assignment due today by midnight. I need help understanding databasse normalization and determining the type of form violation & how to fix the violation.
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