[PDF] Elementary Data Organization




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[PDF] Elementary Data Organization

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[PDF] Elementary Data Organization 71771_3elementary_data_organisation.pdf

Elementary Data Organization

Outline

Data, Entity and Information

Primitive data types

Non primitive data Types

Data structure

Definition

Classification

Data structure operations.

Data, Entity and Information

Data represents a single value or a set of values assigned to entities. Data item refers a single or group of values with in the data

An entity is a thing that has some properties which can take values. Processed or meaning full data is called information. This is used for taking some action.

Primitive data types

These are the data structures which are directly supported by the machine.i.e.Any operation can be performed in these data items.

The different primitive data types are

Integer

Float

Double

Character

boolean

Non Primitive data types

These Datastructures do not allow any specific instructions to be performed on the Data items directly.

The different non primitive data types are

Arrays

Structures

Unions

Class etc.

Data structure

A data structure is an arrangement of data in a computer's memory or even disk storage. An example of several common data structures are arrays, linked lists, queues, stacks, binary trees, and hash tables. Algorithms, on the other hand, are used to manipulate the data contained in these data structures as in searching and sorting. Many algorithms apply directly to a specific data structures.

Data structure

When working with certain data structures you need to know how to insert new data, search for a specified item, and deleting a specific item.

Commonly used algorithms include are useful for: Searching for a particular data item (or record). Sorting the data. There are many ways to sort data. Simple sorting, Advanced sorting

Iterating through all the items in a data structure. (Visiting each item in turn so as to display it or perform some other action on these items)

Classification

There are two types of data structure. They are

Linear Datastructures

Non-Linear Datastructures

Linear Data structures

This Data Structures involve arranging the elements in Linear fashion. Eg.

Stacks

Queue

Lists

Non-Linear Data structures

This Data structures involve representing the elements in Hierarchical order. Eg:

Trees

Graphs

Data structure operations

Operation means processing the data in the data structure. The following are some important operations.

Traversing

Searching

Inserting

Deleting

Sorting

Merging

operations

Traversing

To visit or process each data exactly once in the data structure

Searching

To search for a particular value in the data structure for the given key value.

Inserting

To add a new value to the data structure

operations

Deleting

To remove a value from the data structure

Sorting

To arrange the values in the data structure in a particular order.

Merging

To join two same type of data structure values


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