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Computing & Information Sciences. Kansas State University. Wednesday, 30 Aug 2006 ... as the relation of k columns obtained by erasing the columns that are not listed ...
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The Condition Box ... Complex conditions can be used in condition boxes ... Provide as a gift for all loan customers of the Perryridge branch, a new $200 ...
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Department of Computing and Information Sciences, KSU ... as the relation of k columns obtained by erasing the columns that are not listed ...
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A basic expression in the relational algebra consists of either one of the following: ... Definition in terms of the basic algebra operation. Let r(R) and s(S) ...
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Directories of Web services are described using the Universal Description, ... Search Key - attribute to set of attributes used to look up records in a file. ...
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Directories of Web services are described using the Universal ... Index files are typically much smaller than the original file. Two basic kinds of indices: ...
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The leaf nodes in a B -tree file organization store records, instead of pointers. ... key unique by adding a record-identifier. Extra storage overhead for keys ...
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... the attributes of r, which gives the new value for the attribute ... CIS 560: Database System Concepts. Create Table with Integrity Constraints. not null ...
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Subtracting a date/time/timestamp value from another gives ... CIS 560: Database System Concepts. Predicate Calculus Formula. 1. Set of attributes and constants ...
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Find all customers who have an account from at least the 'Downtown' and the Uptown' branches. ... _name ( branch_name = 'Uptown' (depositor account)) Computing ...
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Atomic Domains and First Normal Form. Decomposition Using Functional Dependencies ... Modeling Temporal Data. Computing & Information Sciences. Kansas State ...
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SQL is based on set and relational operations with certain modifications and enhancements ... SQL allows a subquery expression to be used in the from clause ...
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The grantor of the privilege must already hold the privilege on the specified ... to the same user by different grantors, the user may retain the privilege ...
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Suppose we have a schema R and a non-trivial dependency causes a violation of BCNF. ... Concepts. Example of Attribute Set Closure. R = (A, B, C, G, H, I) F ...
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CIS 560: Database System Concepts. External Sort-Merge. Create sorted runs. Let i be 0 initially. ... attribute (if not already sorted on the join attributes) ...
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Keys must be declared (with a name) and, the key() function can then be used for ... Directories of Web services are described using the Universal Description, ...
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Requires no indices and can be used with any kind of join condition. Expensive since it examines every pair of tuples in the two relations. ...
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Reading for Next Class: First half of Chapter 18, Silberschatz et al., 5th edition ... Suppose Ti aborts, but Tj has read a data item written by Ti ...
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Kansas State University. Wednesday, 15 Nov 2006. CIS 560: Database System Concepts ... Consider some schedule of a set of transactions T1, T2, ..., Tn ...
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