Field

1) A secret value used to encrypt or decrypt messages. 2) A column, attribute, or field of a database. Usually a sequence of random or pseudorandom bits used initially to set up and periodically change the operations performed in cryptoequipment for the purpose of encrypting or decrypting electronic signals, or for determining electronic counter countermeasures patterns, or for producing other key.
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A characteristic defined for a class. Attributes are used to maintain the state of the object of a class. Values can be connected to objects via the attributes of the class. Typically, the connected value is determined by an operation with a single parameter identifying the object. Attributes implement the properties of a type. A column within a table of a relational database.
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A function that returns a true value when only one of the input values is true. If both values are false or both values are true, the output of the XOR function is false. The XOR (exclusiveOR) gate acts in the same way as the logical “either/or. ” The output is “true” if either, but not both, of the inputs is “true. ” The output is “false” if both inputs are “false” or if both inputs are “true. ” Another way of looking at this circuit is to observe that the output is 1 if the inputs are different, but 0 if the inputs are the same. 0
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(1) A person who is in charge of defining and managing the contents of a database. (2) The individual in an organization who is responsible for the daily monitoring and maintenance of the databases. The database administrator’s function is more closely associated with physical database design than the data administrator’s function is.
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A specific key from the set of candidate keys that is used as the main differentiator between records. Every record must have a unique value in its primary key field. An attribute that contains values that uniquely identifies the record in which the key exists.
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