Related Questions

An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
A True
B False
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
A Weak entity
B Strong entity
C ID-dependent entity
D ID-independent entity
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
A Weak entity
B Strong entity
C ID-dependent entity
D ID- independent entity
Which one of the following is not a valid identifier?
A -mysun
B mysun
C my-sun
D my-sun
In an election between two candidates, one got 55% of the total valid votes. 20% of the votes are invalid. If the total votes are 7500, what is the total number of valid votes the other got?
A 2400
B 2700
C 2500
D 2000
In an election between two candidates, one got 55% of the total valid votes. 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was -
A 2700
B 2900
C 3000
D 3100
In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:
A 2700
B 2900
C 3000
D 3100
Which of the following is the attribute that is used to set a global identifier for a microdata item?
A key
B id
C itemclass
D itemid
A good identifier is which of the following?
A One that can change over time
B Can be null
C One that is unique
D Be intelligent
Which attribute specifies a unique alphanumeric identifier to be associated with an element?
A type
B article
C id
D class

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