COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Single value Attribute
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Composite attribute
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Derived Attribute
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Simple Attribute
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Multi Value attribute
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Detailed explanation-1: -Single-valued attributes Single-valued attributes accept only one value. For single-valued attributes, the syntax is: attribute = value attribute = “value with spaces” Multi-valued attributes. Multi-valued attributes accept one or more values that are separated with spaces and enclosed in braces.
Detailed explanation-2: -3] Single value and multi-valued-An attribute having atomic value for a entity is called as single valued attribute.
Detailed explanation-3: -The attributes which are able to store only one value are known as Single Valued Attributes. These attributes cannot store more than one value. For example, The attributes of an Employee entity are Employee id, DOB, Gender. An employee has only one employee id which is unique and it also has a single date of birth.