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Dbms And Irs Essay

1348 words - 6 pages

Difference between DBMS and IRS by focusing on their functionalities.
A Database Management System (DBMS) is a software system that uses a standard way of classifying, retrieving, and running queries on data. The DBMS functions is to manage any incoming data, organize it, and provide ways for the data to be modified or extracted by users or other programs. Some examples of DBMS are PostgreSQL, Microsoft Access, SQL Server, FileMaker, Oracle,Clipper and FoxPro. Since there are so many database management systems are available, so it is important to ensure that they communicate with each other. This is because, most database software comes with an Open Database Connectivity (ODBC) driver ...view middle of the document...

A modern DBMS provides the storage not only for the data, but also for related data entry forms, report definitions, data validation rules, procedural code and also structures to handle video and picture formats. Not only that‚ data storage management is also important for database performance tuning. Performance tuning is related to the activities that make the database to perform more efficiently in terms of storage and speed of access.

Functioning as the security management, the DBMS creates a security system which enforces user security and data privacy. The security rules will determine which users can access the database, which data items can be accessed by each user, and which data operations (read, add, delete, or modify) can be performed by the user. This is very important especially in case of multiuser database systems. On the other hand‚ the DBMS also provides backup and data recovery to ensure the data safety and integrity. Current DBMS systems provide special utilities that allow the database to perform its routine and special backup and restore procedures. Meanwhile, recovery management deals with the recovery of the database after any failure, such as a bad sector in the disk or a power failure. This capability is crucial to preserving the integrity of the database.

An information retrieval system (IRS) is defined device which helps access to documents specified by subject, and the operations associated with it. The documents can be books, journals, reports, or other records of thought. Besides‚ it can also be any parts of the records such as articles, chapters, sections, tables, diagrams or even particular words. This information retrieval system is also capable of storage and maintenance information. Another feature of IRS is probabilistic which means that the retrieved document will not to be certain that it meets the information needed by the users. This means that there might be some related document that was not being retrieved while the unrelated document was retrieved. Technically, a typical IRS should have the following functional and nonfunctional requirements such as the component to add‚ delete and edit the documents in the database. Not only that, this information retrieval system also needs to provide a method which ease the users to find the documents by entering the queries‚ and examine the retrieved document.

Question 2.
Difference of data and information.
Data and information is interrelated. Data is usually raw and unorganized facts that will be processed. Before the data is organized, it can be seen as something that is simple and useless. Data can be classified into qualitative data and also quantitative data. Qualitative data is data that deals with quality which is data that can only be observed and cannot be measured. For examples, to observe the colors, smells, tastes or appearance of something. On the other hand, quantitative data is usually related to numbers and can be measured. It is...

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