End-User Requirements - Tasks that the user of the database will be expecting to do, Functional Requirements - Tasks that the database will be expected to perform, Entity - A person, place, thing event or concept that data will be stored about., Attribute - Characteristics of an entity e.g firstname, surname etc, Aggregate Function used to find the maximum value - MAX(), Aggregate Function used to find the average value - AVG(), A certain query used to delete a record from a database - DELETE, Accuracy of output - A query could be inaccurate if the wrong/no alias is used, The operator used in a wildcard - LIKE, Indicates the properties of each attribute - Data Dictionary,

Databases

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النمط البصري

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