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Define seek time. The time for repositioning the arm is known as the seek time and it enhances with the distance that the arm is known as the seek time.
A database is a set of data. But, is the data kept in a database trustworthy? To answer that query we must first answer the question. What is integrity? Integrity simply means t
4. Describe three ways to handle missing field values
Give an example of Object Representation For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
Primary index A primary index is a file that has a sorted series of records having two columns: a block address for that key field in the data file; and the ordering key field.
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
Need a sample of a clinic database relationships
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