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Define single valued and multivalued attributes.
Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes.
Multivalued attributes: Attributes with a set of value for a certain entity are known as multivalued attributes.
Let us first describe the term relationships. What Are Relationships? A relationship can be defined as: A set of associations or connection, or A rule for communic
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
Do you have experts of the dbms
Determine the rule that a value of a foreign key should appear as a value of some particular table is called a Ans: Referential constraint. The rule that a value of a fo
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
Consider a database application that deals with an Employee relation with information such as SIN, name, data of birth (DOB), and DID (the ID of the department at which the employe
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Define Deadlock avoidance These protocols as well ensure that the system will never enter a deadlock state although the way it is done is different from deadlock prevention. I
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
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