In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system.
In general, larger block sizes are used for online transaction processing applications and smaller block sizes are used for databases with a decision support or data warehousing system.
A secondary key is which of the following?
A secondary key is which of the following?
Sequential retrieval on a primary key for sequential file storage has which of the following features?
Sequential retrieval on a primary key for sequential file storage has which of the following features?
The blocking factor is:
The blocking factor is:
What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length?
What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length?
A pointer is a detailed coding scheme recognized by system software for representing organizational data.
A pointer is a detailed coding scheme recognized by system software for representing organizational data.
A bitmap index is an index on columns from two or more tables that come from the same domain of values.
A bitmap index is an index on columns from two or more tables that come from the same domain of values.
The primary goal of physical database design is data processing efficiency.
The primary goal of physical database design is data processing efficiency.
Which of the following improves a query's processing time?
Which of the following improves a query's processing time?
If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?
If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?
A multidimensional database model is used most often in which of the following models?
A multidimensional database model is used most often in which of the following models?
Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers.
Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers.
The three newest database architectures in use today are relational, multidimensional and hierarchical.
The three newest database architectures in use today are relational, multidimensional and hierarchical.
Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process.
Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process.
It is usually not very important to design the physical database to minimize the time required by users to interact with the information systems.
It is usually not very important to design the physical database to minimize the time required by users to interact with the information systems.
A field represents each component of a composite attribute.
A field represents each component of a composite attribute.
Distributing the columns of a table into several separate physical records is known as horizontal partitioning.
Distributing the columns of a table into several separate physical records is known as horizontal partitioning.
Hashing algorithm converts a primary key value into a record address.
Hashing algorithm converts a primary key value into a record address.
A rule of thumb for choosing indexes for a relational database includes which of the following?
A rule of thumb for choosing indexes for a relational database includes which of the following?
An extent is a contiguous section of disk storage space.
An extent is a contiguous section of disk storage space.
Which of the following are integrity controls that a DBMS may support?
Which of the following are integrity controls that a DBMS may support?
The fastest read/write time and most efficient data storage of any disk array type is:
The fastest read/write time and most efficient data storage of any disk array type is:
Which of the following is an advantage of partitioning?
Which of the following is an advantage of partitioning?
What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?
What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?
Which of the following is not a factor to consider when switching from small to large block size?
Which of the following is not a factor to consider when switching from small to large block size?
Selecting a data type involves which of the following?
Selecting a data type involves which of the following?
Denormalization and clustering can work well to minimize data access time for small records.
Denormalization and clustering can work well to minimize data access time for small records.
If a denormalization situation exists with a one-to-one binary relationship, which of the following is true?
If a denormalization situation exists with a one-to-one binary relationship, which of the following is true?
Some advantages of partitioning include: efficiency, security, and load balancing.
Some advantages of partitioning include: efficiency, security, and load balancing.
When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.
When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.
