Weak entity, Database Management System

An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the Availability entity type.

Posted Date: 3/26/2013 1:35:44 AM | Location : United States







Related Discussions:- Weak entity, Assignment Help, Ask Question on Weak entity, Get Answer, Expert's Help, Weak entity Discussions

Write discussion on Weak entity
Your posts are moderated
Related Questions
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.

Question : (a) Database Management Systems (DBMS) is the foundation of business intelligence. Explain the following concepts related to DBMS: (i) Entity Relationship Diagr

What is Data dictionary? A data dictionary is a reserved space in a database that is employed to store information about the database itself. A data dictionary may consist o

What are the disadvantages of file-processing system?  Ans: The Disadvantages of File-Processing System a. Data redundancy and inconsistency - Data redundancy means not nece

What does conceptual design work? A conceptual design involves modelling independent of the DBMS.

With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol

Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.

Describe analysis of access paths To describe analysis of access paths, consider an example of the design of a company's employee skills database. A part of the object model fr

With the help of a diagram defines the typical element modules of a DBMS? The functional elements of a database system can be widely divided into: 1) Storage manager and 2) q

Given the following relations TRAIN (NAME, START, DEST) TICKET (PNRNO., START, DEST, FARE) PASSENGER (NAME, ADDRESS, PNRNO.) Write SQL expressions for the following queries: No