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Related Flashcards
Cards In This Set
| Front | Back |
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Organized collection of logically related data
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Database
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Stored representations of meaningful objects and events
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Data
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2 types of Data.
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>structured
>unstructured |
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What type of data are numbers, text and dates?
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Structured
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What type of data are images, videos and documents
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Unstructured
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What does UML stand for?
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Unfinished Modelling Languages
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Helps users understand data
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Context
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Turn data into useful information that managers can use for decision making and interpretation
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Graphical display
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Descriptions of the properties or characteristics of the data, including data types, field sizes, allowable values, and data context
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Metadata
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5 Disadvantages of File Processing
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>Program-data dependence>Duplication of Data/ data redundancy
>Limited Data Sharing >Lengthy Development Times >Excessive Program Maintenance |
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Disadvantage of file processing where All programs maintain metadata for each file they use
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Program-data dependence
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Disadvantage of file processing where different systems/programs have seperate copies of the same data.
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Duplication of data/data redudancy
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Disadvantage of file processing where there is no centralized control of data
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Limited Data sharing
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Disadvantage of file processing where programmers must design their own file formats
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Lengthy development time
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Disadvantage of file processing where 80% of information systems budget is used.
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Excessive program Maintenance
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