Posted: September 11th, 2015

At the heart of information systems.

Managing Data
Information systems require access to data. The program examples so far have relied largely upon user inputs for this data, but most information systems are built upon one or more databases that maintain extensive information. Another source of information is independently stored information, like the current system date in the birthday calculator program or like cookies with website information. Common forms of data accessed by programs in information systems include: direct user inputs, locally stored variables, local files, local databases, remote session files, and remote databases.

Programs not only retrieve data from these but also write information to them.

As an example, the Discussion forum relies on retrieving information about you and your colleagues from a user database. When you log in, the program contained in scripts embedded in the Discussion forum establish a session so that as you navigate through your classes, it still knows who you are. The Discussion forum also has to access a database that contains the content of all of the posts and tracks what post each replies to, when it was posted, and who posted it. The program supporting the Discussion forum has to be able to pull all of these posts and organize them in the thread. You can also write content to that post database by replying in a thread. In addition to interacting with these databases, the Discussion forum also accesses files that tell how everything should appear in the browser. All of this data has to be stored and must be easily and systematically retrievable. Data is at the heart of information systems.

Give 1 example of a specific information system that you are familiar with, and describe at least 3 different ways that programs within that system access, store, and manage data. Please include at least 1 example of a program retrieving data and 1 example of the program writing data. Answer in your own words & in paragraph form. Follow the APA Guidelines (file uploaded). Do not write introduction & conclusion. You can add additional sentences/paragraphs. Your reference should be online (Internet) & you can add additional references.

Do you want your assignment written by the best essay experts? Order now, for an amazing discount.