In the ideal gas law equation, what does the variable n stands for B. moles of gas. (n: a lowercase ânâ stands for the number of moles of a gas. [ This is a measurement in moles, so if you are given a mass in grams or kilograms, be sure to change it to moles first.) ]. Expert answered| cecillereign |Points 261|.
Theta-Join I The theta-join of two relations R and S is the set of tuples in theCartesian product of R and S that satisfy some condition C.RA R ./ C SSQL SELECT *FROM R, SWHERE C; I R ./ C S = Ë C (R S): T. M. Murali August 30, 2010 CS4604: SQL and Relational Algebra. Results of operations are also sets of tuples. (Later, we will dene arelational algebra on bags.) I Think of expressions in relational algebra as queries, which construct newrelations from given relations. I Four types of operators: I Remove parts of a single relation: projection and selection.
Check the joined fields in your query. To check the data types of fields in a query, you look at the source tables in Design view and inspect the properties for the fields you are checking. Open the query in Design view. Joins appear as lines that connect fields in the source tables.here are two ways to do this: View the action query in Datasheet view before you run it. To do this, open the query in Design view, click View on the Access status bar, and then click Datasheet View on the shortcut menu.