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Data Structure

In computer science, a data structure is a exacting method of organizing the data in a computer so that it can be used proficiently.

The different kinds of data structures are suited to the different kinds of applications, and some are the highly specialized to the precise tasks. For example, the B-trees are particularly well-suited for the implementation of the databases, while the compiler implementations generally use the hash tables to look up the identifiers.

The data structures provide a means to handle the large amounts of data professionally, such as the large databases and the internet indexing services. Usually, the efficient data structures are a type in designing the efficient algorithms. Some formal design methods and the programming languages highlight the data structures, rather than the algorithms, as a key organizing the factor in the software design. The storing and retrieving can be carried out on the data stored in both the main memory and in the secondary memory.

A data structure is a means of organizing the data that considers not only items stored, but also their relationship to each other. The advance knowledge about relationship between the data items allows the designing of the efficient algorithms for manipulation of the data.

List Out The Areas In Which Data Structures Are Applied Extensively

1)Operating System,

2)Database Management System,

3)Compiler Design,

4)Numerical Analysis,

5)Statistical analysis package,

6)Artificial Intelligence,



What are the major data structures used in the following areas: Network data model, Hierarchical data model and RDBMS.

*Network data model = Graph

*RDBMS = Array (i.e. Array of the structures)

*Hierarchical data model = Trees

If you are using the C language to execute heterogeneous linked list, what pointer type will you use?

The heterogeneous linked lists hold the different data types in its nodes and we require a pointer, link to connect them. It is not possible to use the ordinary pointers for this. So we go for the void pointer. The void pointer is capable of storing the pointer to any type as it is the generic pointer type.

What is the data structures used to execute the recursion?

The Stack. Because of its Last in First out (LIFO) property it remembers its 'caller' so knows whom to revisit when function has to return. The recursion makes use of the system stack for the storing return addresses of function calls.

Every recursive function has its equivalent iterative or non-recursive function. Even when such the equivalent iterative procedures are written, the explicit stack is to be used.

Sorting is not possible by using which of the following methods? (Insertion, Selection, Exchange, Deletion)

Sorting is not possible in the Deletion. Using insertion we can perform the insertion sort, using the selection we can perform the selection sort, and by using the exchange we can perform bubble sort (and the other comparable sorting methods). But no sorting method can be done just by using the deletion.

Classify Hashing Functions based on various methods by which key value is found.

1)The Subtraction method,

2)Direct method,

3)Pseudo-random method.

4)Digit-Extraction method,

5)Modulo-Division method,

6)Folding method,

7)Mid-Square method,


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