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3 years ago

Which of the following is NOT a feature of unclustered index

Computers and Technology

1 answer:

Lorico [155]3 years ago

3 0

Answer:

C. Unclustered index has the same ordering of data records as that of the data entries in the database

Explanation:

Indexes are used to split up queries in an SQL server or database management system DBMS.

There are two types of indexes namely clustered indexed and unclustered indexes.

Clustered indexes define the order in which data is stored in a table while unclustered index does not sort the order in a table.

In an unclustered index, the data table and the index are stored in different places, they are easy to maintain and update since they do not follow a particular order and there can be several indexes in a data file since the data table is stored differently from the index file.

So, all the other options except C are features of unclustered indexes since unclustered index does not have the same ordering of data records as that of the data entries in the database.

So, C is the answer.

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alexgriva [62]

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Data abstraction is known to be a tool that helps a person to change a complex data structure into simple ones which can be used easily.

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2 years ago

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def last_digit(num):

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3 years ago

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3 years ago

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Explain about forensic tools?

Ganezh [65]

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3 years ago

BITS wants to store information about the supervisors, including their supervisor number and the relationship to consultants. Su

Olin [163]

Answer:

Convert the table into normalize form

Explanation:

Un normalized relation of the given schedule is as

Consultant ( ConsultNum, Last Name, First Name, Street, City, ZipCode

HoursRate (SupervisorNum, Supervisor Num)

(Tasks, Description, Catagory, Price, SupervisorNum))

According to these functional dependencies :

SupervisorNum is dependencies of the SupervisiorNum

ConsltNum is dependencies of the Last Name, First Name, Street, City, ZipCode, Hours, Rate

Tasks are dependencies of Description, Category, Price

The consultant table is not in a normalized form as it contains repeating groups. Make composite keys such as Supervisor Num, Tasks and ConsltNum and convert the table in NF by removing repeating groups

Such as table in NF

Consultant

(Consult Num, Last Name, First Name, Street, City, Zip Code, Hours, Rate

Supervisor Num, Supervisor Name, Tasks, Description, Category, Price)

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3 years ago