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Author Archives: Anonymous

Tree-based indexes are best for looking up values based on t…

Tree-based indexes are best for looking up values based on the range tests because they keep references to data in sorted order.

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 First normal form requires that all domain values in a rela…

 First normal form requires that all domain values in a relation are atomic.

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Non-relational DB is characterized by (select ALL that apply…

Non-relational DB is characterized by (select ALL that apply):

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What normal form the following table is in? 

What normal form the following table is in? 

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A tuple in formal terms is like a row in informal terms.

A tuple in formal terms is like a row in informal terms.

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Which of the following is not a possible meaning of the SQL…

Which of the following is not a possible meaning of the SQL marker NULL?

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Given the following schema, Pet (petId: integer, petType: st…

Given the following schema, Pet (petId: integer, petType: string, petName: String, favoriteFood: String) Cat (petId: integer (FK), furColor: string) Dog (petId: integer (FK), furColor: string) Bird (petId: integer (FK), canFly: boolean)   Which relational algebra expression is going to produce a list of distinct bird names for the birds who can fly?

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In respect to Transaction ACID properties, Atomic property s…

In respect to Transaction ACID properties, Atomic property stands for the fact that  

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INSERT SQL statement can be used to do the following:

INSERT SQL statement can be used to do the following:

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As discussed in this class, the JDBC automatically closes co…

As discussed in this class, the JDBC automatically closes connection when not used by the application

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