A ________ is a pictorial depiction of the schema of a database that shows the relations in the database, their attributes, and primary keys and foreign keys.
Schema diagram
Relational algebra
Database diagram
Schema flow
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For each attribute of a relation, there is a set of permitted values, called the ________ of that attribute.
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2
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The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.
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3
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The ______ clause allows us to select only those rows in the result relation of the ____ clause that satisfy a specified predicate.
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4
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The most commonly used operation in relational algebra for projecting a set of tuple from a relation is
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5
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Using which language can a user request information from a database?
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6
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The result which the operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.
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7
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A relational database consists of a collection of
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8
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Student(ID, name, dept name, tot_cred)
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9
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The _______operation performs a set union of two “similarly structured” tables
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10
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A domain is atomic if elements of the domain are considered to be ____________ units.
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