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24 Cards in this Set
- Front
- Back
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Definition of a Relational Database.
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A large collection of data items stored in tables containing links between the tables so that the data can be accessed in many different ways and by a range of different applications programs.
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Definition of File Transfer Protocol.
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A standard Internet protocol providing a simple way of
transferring files between computers using the Internet, (by a process which bunches the data into packages and sends messages back and forth to say each package has been received.) |
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Definition of Universal Resource Locator (URL).
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The web address of a site / the address for a web page on the world wide web / the recognised
method for referring to resources on the internet / the unique address for a file that is accessible on the Internet. |
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Definition of Web Crawler.
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A program that automatically browses all web pages (in a systematic manner).
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Definition of Feasibility Report.
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The summary of an initial investigation to look at the likelihood of being able to create a new
system with stated aims and objectives at reasonable cost. The document is used by senior managers to assess whether it is worth continuing with the project. |
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Definition of a Code of Conduct.
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An employee code of conduct consists of rules/agreement drawn up by the senior
management or their advisors that set out what an employee is/is not allowed to do in the course of their employment. It also details the sanctions which will be applied should the employee not obey the rules. |
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Definition of a Management Information System (MIS).
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MIS are organised collections of people, procedures and resources designed to support the
decisions of managers. |
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Definition of Data Consistency.
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Data consistency is the relationship between the input data, the processed data and the output
data as well as other related data. If the system is working properly the data will be correct at each stage and is said to be consistent. |
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Definition of Data Redundancy.
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Data redundancy is where you store an item of data more than once.
A company may hold its data in different files. This is wasteful because some data may need to be input twice and if data is changed in one it will need to be changed in the other. Data which is repeated unnecessarily is called redundant data. |
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Definition of Data Integrity.
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The correctness/truth/accuracy of the data.
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Definition of Data Independence.
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Data and the applications/programs used to access it are independent/separate
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Definition of Data Warehouse.
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Refers to large amounts of data which are stored together, usually in a
single location, for further processing. OR A database used to store an organization’s historical data which is used by a ******** to extract information to help managers make decisions. |
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Definition of Data Mining.
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Look for the idea of trends, patterns or generating new information.
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Definition of Management Information System.
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An organised collection of people, procedures
and resources designed to support the decisions of managers. |
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Definition of Data Normalisation.
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Simplifying data structures so that attributes in each table only relate to the entity.
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Definition of Distributed Database.
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A distributed database has data stored on a number of computers at different locations
but appears as one logical database. |
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Definition of Web Crawler.
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Continually searches the web looking for new pages and recording information they find which browses the web and keeps an index of what it
finds. |
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Definition of a Search Engine.
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An application accessed over the internet that maintains indexes of web pages and logical operators/key words to find the information you require.
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Definition of a Hyperlink.
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An area of a web page that contains a link to another location on the Web.
You can surf the Internet, which means that you are using hyperlinks to move from one area of interest to another. (1) |
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Definition of Distributed Computing.
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Where a series of computers are networked together and they each work on solving the same problem. Each computer shares data processing, storage and bandwidth in order to solve a single problem.
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Definition of a Code of Conduct.
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An employee code of conduct consists of rules drawn up by the senior management or their advisors that set out what an employee is/is not allowed to do in the course of their employment. (It also details the sanctions which will be
applied should the employee not obey the rules.) |
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Definition of Corrective Maintenance.
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‘Bugs' which may not have been identified during the testing process become apparent when the system is operating in a live environment.
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Definition of Perfective Maintenance.
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Users may, after a period of time find a particular aspect of the software
unsatisfactory e.g. tables may be difficult to format for printing. OR A security issue e.g. a virus threat may emerge which means that the system requires an extra level of protection. |
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Definition of Adaptive Maintenance.
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Changes in the business environment e.g. change in legislation may mean
that the software is required to perform tasks it wasn't originally designed for. OR New software or hardware may be purchased the integration of which requires changes to existing systems e.g. purchase of new printers with incompatible drivers. |
