Disadvantages Of Database Management System

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What is Data? Data is raw materials or known facts that can be record to have an implicit meaning. What is Informaition? Information is processed data which stored as informations. What is a Data Base? A collection of related data is known as Data base. What is Data Base Management Systems? A Software package /System to facilitate the creation & maintenance of a Computerized Database. Example 1.1 –  Evolution Of Database Managemnet Systems Humans started to store information very long ago. From time to time it has developed in many ways. More usable, more complete and more efficiently. 1960s – Computerized database management systems started in 1960s! There were 2 popular data models in this decade. 01. CODYSYL…show more content…
Also online transaction processing & online analytics Processing began to come to age. 2000s – Solid Growth of Database applications Continues, commercial webs (Yahoo.com, Google.com). Presently the 3 leading database companies in the west are Microsoft, IBM and Oracle  Advantages and Disadvantages of the database Management Systems approach vs. File based Systems Approach Disadvantage of a database management system is that they generally don't do well in Binary Large Object storage (BLObs, or binary files like images), but that's easy enough to get around by using references to the file system or a different database. Also, some DBMSs are designed for this. The advantage of using a DBMS is that not reinventing the wheel and everything is done and tested by outside parties, so long as trust the developer. Advantages of DBMS A number of advantages of applying database approach in application system are obtained including: • Control of data redundancy - The database approach attempts to eliminate the redundancy by integrating the file. Although the database approach does not eliminate redundancy entirely, it controls the amount of redundancy inherent in the…show more content…
Integrity is usually expressed in terms of constraints, which are consistency rules that the database is not permitted to violate. Disadvantages In split of a large number of advantages can be found in the database approach, it is not without any challenge. The following disadvantages can be found including: 1. Complexity Database management system is an extremely complex piece of software. All parties must be familiar with its functionality and take full advantage of it. Therefore, training for the administrators, designers and users is required. 2. Size The database management system consumes a substantial amount of main memory as well as a large number amount of disk space in order to make it run efficiently. 3. Cost of DBMS A multi-user database management system may be very expensive. Even after the installation, there is a high recurrent annual maintenance cost on the software. 4. Cost of conversion When moving from a file-base system to a database system, the company is required to have additional expenses on hardware acquisition and training cost. 5. Performance As the database approach is to cater for many applications rather than exclusively for a particular one, some applications may not run as fast as
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