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Basic Concepts - Data
‘Data’ refers to a value or set of values. These values may represent some abbreviations from an exp
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Basic Concepts - Data Item and Types of Data Items
A ‘Data Item’ refers to a single unit of values. E.g. Roll Number, Name, Date of Birth, Age etc.
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Basic Concepts - Entity and Types of Entities
An entity is a thing or object that has unique and independent existence and can be differentiated f
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Basic Concepts - Attribute and Domain
Attributes are features or characteristics which are used to differentiate an entity from other enti
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Basic Concepts - Entity Set
ntity set is a collection or group of all the entities which are of same type and share same attribu
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Basic Concepts - File
file is a collection of related records of the entities in a given entity set. E.g. a file containi
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Basic Concepts - Data Structures and Types of Data Structures
Data can be organized in many ways and data structures is one of these ways. It is used to represent
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Basic Concepts - Factors that influence the choice of a particular data structure
Following factors influence the choice of a particular data structure:
1. It must be able to rep
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Basic Concepts - Characteristics of data structures
1. It contains data items that can be elementary item, group item or another data structure.
2.
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Basic Concepts - Operations that can be performed on data structures
Following operations can be performed on the data structures:
1. Traversing
2. Searching
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