Physical Database Design(Ict-Basic)Q1

Which of the following are integrity controls that a DBMS may support?

1 Mark(s)

Which of the following is not a factor to consider when switching from small to large block size?

1 Mark(s)

Which of the following is an advantage of partitioning?

1 Mark(s)

The blocking factor is:

1 Mark(s)

A secondary key is which of the following?

1 Mark(s)

. If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?

1 Mark(s)

What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length?

1 Mark(s)

Selecting a data type involves which of the following?

1 Mark(s)

If a denormalization situation exists with a one-to-one binary relationship, which of the following is true?

1 Mark(s)

Sequential retrieval on a primary key for sequential file storage has which of the following features?

1 Mark(s)

A multidimensional database model is used most often in which of the following models?

1 Mark(s)

What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?

1 Mark(s)

The fastest read/write time and most efficient data storage of any disk array type is:

1 Mark(s)

Which of the following improves a query's processing time?

1 Mark(s)

A rule of thumb for choosing indexes for a relational database includes which of the following?

1 Mark(s)

Do not specify a unique index for the primary key of each table.
Be careful indexing attributes that have null values.
Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries.
Indexes are more useful on smaller tables.

Physical Database Design(Ict-Basic)Q1 : Question 1 of 15