CS301 Data Structure GDB Solution Fall 2013

GDB Scenario: Let us consider that you are a developer in a company. Your company asks you to develop an application for a data GRID station. Data GRID station is situated in NIPS (National Institute of Physical Sciences). Purpose of application is to receive the data from data GRID station once in a week between 10 A.M to 10:30 A.M and then store it into a data structure. The data that comes from data GRID station is in the form of sorted digits. The sorted data can be in ascending or descending order.

GDB Questions:

If your concern is fast and efficient searching then which data structure you will choose to store the data? Give reasons to justify your selected data structure.

Solution: 

The simplest, most general, and least efficient search structure is merely an unordered sequential list of all the items. Locating the desired item in such a list, by the linear search method, inevitably requires a number of operations proportional to the number n of items, in the worst case as well as in the average case. Useful search data structures allow faster retrieval; however, they are limited to queries of some specific kind. Moreover, since the cost of building such structures is at least proportional to n, they only pay off if several queries are to be performed on the same database (or on a database that changes little between queries).

Static search structures are designed for answering many queries on a fixed database; dynamic structures also allow insertion, deletion, or modification of items between successive queries. In the dynamic case, one must also consider the cost of fixing the search structure to account for the changes in the database.

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