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Describe the candidate key functions ?
Candidate Key and Alternate Key: In some instances, an entity will have more than one attribute which can serve as a primary key. Any key or minimum set of keys which could be a primary key is known as a candidate key. Ones candidate keys are identified, one of them is chosen as primary key. The choice of Primary key is based on guaranteed uniqueness and minimalism. Candidate keys that are not chosen as the primary key are known as alternate keys.
Differentiate strict two phase locking protocol and rigorous two phase locking protocol. In strict two phase locking protocol all exclusive mode locks taken by a transaction is
Whenever the LIMIT clause will be used? LIMIT is used for the following kinds of problems: 1) Answering questions about first or last and largest or smallest 2) Splitting
(a) Why did SAP introduce the extended star schema?
I need an ERD created for any original database(can be on anything). It needs to be 3NF. I then need all the CREATE STATEMENTS, INSERT STATEMENTS(anything you can think of as long
Describe in brief about DBMS ?
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Explain Authorization and Integrity Manager ? Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to acce
You are managing the following database system: • DBMS: Oracle 11g • OS: Sun Solaris • System architecture: Web-based application using ASP.Net • Purpose of Server: HR managem
Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pictori
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