A(n) __________________ is a logical connection between rows in two tables where data in one table...
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A(n) __________________ is a logical connection between rows in two tables where data in one table references data in another table. |
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The SQL ________________ statement removes a table from a database. |
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The relational algebra "restrict" operator selects only the rows from the input table(s) that satisfy a condition expressed in the _________________ clause. |
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The SQL/PL ______________ command is used to re-direct the output of a script file to a text file. |
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The ________________________ join creates a result set that includes the matching (related) rows of the input tables as well asthe non-matching rows from both input tables in the result table. |
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The _________________ set operator combines all rows from two SELECT queries but requires that the queries be "compatible". |
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The SQL _________________ statement deletes rows of data from a table. |
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Count, min, max, average and sum are examples of ___________________ functions that can be used to summarize the data of an SQL statement. |
Homework Answers
Answers :
1) A Join is a logical connection between rows in two tables where data in one table references data in another table.
2) The SQL DROP statement removes a table from a database.
3) The relational algebra "restrict" operator selects only the rows from the input table(s) that satisfy a condition expressed in the where clause.
4) The SQL/PL SPOOL command is used to re-direct the output of a script file to a text file.
5) The Full Outer join creates a result set that includes the matching (related) rows of the input tables as well asthe non-matching rows from both input tables in the result table.
6) The UNION set operator combines all rows from two SELECT queries but requires that the queries be "compatible".
7) The SQL DELETE statement deletes rows of data from a table.
8) Count, min, max, average and sum are examples of Aggregate functions that can be used to summarize the data of an SQL statement.
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