What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?
Options: ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);, ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);, ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);, None of the above is correct.
Business meeting and conferences can be held by linking distantly located people through a computer network. Not only the participants exchange information but are able to see each other. What is it called?
Options: Â A compiler does a conversion line by line as the program is run
B. Â A compiler converts the whole of a higher level program code into machine code in one step
C. Â A compiler is a general purpose language providing very efficient execution
D. Â None of the above
Options: a set of physical layer standards developed by EIA and intended to replace RS-232-C., a check bit appended to an array of binary digits to make the sum of the all the binary digits, a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and thus the presence of the errors is detected, the ratio of the number of data units in error to the total number of data units
Options: (A)A stage of the KDD process in which new data is added to the existing selection. (B) The process of finding a solution for a problem simply by enumerating all possible solutions according to some pre-defined order and then testing them (C) The distance between two points as calculated using the Pythagoras theorem. (D) None of these
A microprocessor integrates the arithmetic logic and control circuitry of a computer into one chip. The first microprocessor was built by a group of engineers at the Intel Corpn. Can you tell who headed this group?
Options: Victor Poor, Stan Mazor, Marcian E. (Ted) Hoff, Seymour Cray