Monday, November 18, 2019

Advanced Database Systems Essay Example | Topics and Well Written Essays - 2000 words

Advanced Database Systems - Essay Example Additionally, all of these computers are connected with each other and every system has the capability to process the data individually thus helping local systems. In addition, each of the systems contributes in running a single or many wide-reaching database applications. However, a distributed database is not installed on a single location completely. But, it is divided throughout a network of computers that are physically detached and linked via communications medium. However, these types of system require accessing data from a single place. Thus, the distributed nature of the database is unknown to its clients as well as this simplicity appears itself in a different means. In more simple words, a distributed database (DDB) is a set of numerous, reasonably organized databases, spread over a large size computer network. A distributed DBMS is the computer application software that helps manage the distributed database as well as enables the sharing apparent to the clients. Moreover, the term of distributed database system (DDBS) is normally utilized to state both distributed database systems as well as distributed database management system. Furthermore, the distributed database management systems are similar to the distributed file systems in a sense that they help access distributed data (Oracle Corporation, 2003), (Camarinha-Matos, 2010), (Borysowich, 2007) and (Ozsu, 2010). This report discusses some legal and ethical issues that need to be considered when introducing a distributed database system. In this connection this report will analyze the legal and ethical issues that apply to distributed and relational databases. DISTRIBUTED DATABASE After the emergence of the distributed networks (which later on became more and more popular), the need for the development of distributed database management systems turned out to be more critical. In this regard, a distributed system differs from a centralized structure in one main feature: The information and data i s frequently in the command of data are distributed/dispersed over two or additional distantly scattered places. On the other hand, distributed database management systems are exposed to a lot of security challenges more than that exist within a centralized DBMS. Additionally, the improvement of proper distributed database security has been challenging through the comparatively new development of the object-oriented database paradigm. Moreover, this innovative paradigm is not able to be disregarded. Thus, it has been formed to tackle with the rising complication of the data stored in current business or corporate database structures (Coy, 1996) and (Camarinha-Matos, 2010). Distributed systems basically allow users to access files that are placed on different computer systems. Additionally, this data has no obvious organization as well as the relationships between data in diverse files are not handled by the system and are the client’s duty. In this scenario, a distributed dat abase system is developed on the basis of a design (normally called schema) that describes together the arrangement of the distributed data, as well as the relations between the data. In addition, this design can be expressed with a number of data models, such as object-oriented or relational data model. In this regard, a distributed database management system encompasses all the tasks of a database management system. For instance, it offers advanced transaction management, declarative query capability and integrity implementation. However, in fact distributed database management systems differ from transaction processing systems due to the fact that transaction proce

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