4二级vf考试笔试（4, grade two, VF test, written test）.docVIP

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4二级vf考试笔试（4, grade two, VF test, written test）.doc

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4二级vf考试笔试（4, grade two, VF test, written test）

4二级vf考试笔试（4, grade two, VF test, written test） 1. a variable pi=3.1415926, execute the command? ROUND (PI, 3) shows the results for ______. A, 3.141 B, 3.142 * C, 3.140 D, 3 The following 2. statements about the freedom of expression, the right is ______. A, all with a previous version of FOXPRO (FOXBASE) to establish the table B, can be set up by Visual FoxPro, but it cannot be added to the database C, a free table can be added to the database, the database table can also be removed from the database table to be free D, a free table can be added to the database, but the database table cannot be removed from the database table to be free Table 3.SQL statement command is ______. A, DROP * TABLE B, DELETE TABLE C, ERASE TABLE D, DELETE DBF 4. a two-dimensional table data model to represent data link between the entity and the entity called ______. A, entity - relationship model B, hierarchical model C, network model D, * model 5. if a process does not contain a RETURN statement or a RETURN statement, no expression is specified, then the process of ______. A, no return value B, return 0 C, or.T. * D, returns.F. On the following 6. properties, methods and events described, ______ is wrong. A properties are used to describe the state of the object, methods to represent the behavior of objects B, the two objects of the same class based on their attribute values set C, the event code can also be invoked explicitly like methods D, in a new form, you can add properties, methods and events of the new * 7.SQL implementation of grouping query phrase is ______. A, ORDER BY B, GROUP * BY C, HAVING D, ASC The 8.Append blank command is ______. A, edit records B, add new records to the first record before C, at the end of the table, add a blank record * D, in the current record before adding a blank record 9. continuous applications cannot generate ______. A,.App file B,.Exe file C, com, DLL file D, file *.Prg 10. to establish a table with the SQL statement for the validity rules de