Which of the following products implemented the CODASYL DBTG model? R:base IDMS dBase-II DB2 TRUE ANSWER : ? YOUR ANSWER : ?
All instances of an entity class have the same attributes. False True TRUE ANSWER : ? YOUR ANSWER : ?
Queries to a database both (a) and (b) are written in English All of these can use aggregate functions like SUM and COUNT None of these TRUE ANSWER : ? YOUR ANSWER : ?
1:1, 1:N and N:M relationships are also known as HAS-A relationships. True False TRUE ANSWER : ? YOUR ANSWER : ?
Given the functional dependency R → (S,T) , then it is also true that R → S. True False TRUE ANSWER : ? YOUR ANSWER : ?
In which of the following can many entity instances of one type be related to many entity instances of another type? Many-to-Many Relationship One-to-One Relationship Composite Relationship One-to-Many Relationship TRUE ANSWER : ? YOUR ANSWER : ?
A recursive relationship is a relationship between an entity and ________ . an archetype entity an instance entity a subtype entity itself TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time? data manipulation language query language report writer transaction log None of these TRUE ANSWER : ? YOUR ANSWER : ?
The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types. Flat file Data structure Table None of these Database TRUE ANSWER : ? YOUR ANSWER : ?
One approach to standardizing storing of data MIS CODASYL specifications None of these All of these structured programming TRUE ANSWER : ? YOUR ANSWER : ?