A(n) ____ is one or more fields that uniquely identify the data in a file.
A. identifier
B. data item
C. structure
D. transaction
E. key
Answer: E
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Once an ID value has been declared in a document, other attribute values can refer to it using the ____ token.
A. name B. entity C. IDREF D. value
Which order is correct in the retrieval and presentation of data?
I. Select rows from the relation. II. Derive new attributes. III. Join two relations together. IV. Present data. V. Choose a relation from the database. VI. Project columns from the relation. VII. Calculate totals and performance measures. VIII. Index or sort rows. A) V - III - II - I - VIII - IV - VI - VII B) V - III - VI - I - II - VIII - VII - IV C) III - V - VI - I - II - VIII - VII - IV D) V - III - II - I - VI - IV - VII - VIII E) III - V - II - I - VI - VII - VIII - IV
An alternative to using a Boolean expression, such as someVariable == 10, is to store the Boolean expression's value in a Boolean variable.
Answer the following statement true (T) or false (F)
In the IA-32 architecture, a(n) ________ occurs when a process has attempted to access memory outside of its segment.
a) page fault b) general protection fault exception c) segment-overflow exception d) TLB miss