10春vfp试题与答案(国外英语资料).docVIP

10春vfp试题与答案(国外英语资料) Two grade VFP2010 spring test questions The second part is Visual Foxpro programming First, choose a question (answer with the answer sheet and fill in the 21~30 answer number in turn) 21., the basic operations of relation include parallel, difference, intersection, selection, projection, connection (connection), etc.. In these relational operations, the operand must be The two relationship does not have to have the same relationship, and the model is D. A. and B. join C. projection D. join 22. in the following date, temporal expression, syntactically incorrect is C. A.DATE () -400 B.DATETIME0+400 C.DATETIME () -DATE () D.DTOC (DATE ()) -TTOC (DATETIME ()) 23. open an empty table without record, and execute the command RECNO (BOF) without making any operations associated with the movement of the record pointer EOF () should display C on the back screen. A.0,.T., and.T. B.0,.T., and.R C.1,.T., and.T. D.1,.T., and.R 24. in the following statement about the database and table, the error is A. When A. opens a database table, the associated database is not automatically opened or opened When B. closes the database with the CLOSE DATABASE ALL command, all open tables are turned off C. a table can be opened in multiple workspaces D. removes all tables in the database into free tables when you remove the database using the remove operation in the project manager 25. in the following query statement, the error is B. The data based on the A. query can be tables and views, and queries cannot be created based on queries B. as long as the query output fields have statistical functions such as COUNT (), SUM () and so on, you must set the grouping field, otherwise check Query cannot run The C. query file is a text file that allows users to use any text editor (as in the Windows operating system) Edit it The output destination of the D. query can be a text file, but it cannot be output directly as a file in the Microsoft Excel format 26. set the current working