Introduction to Database System Which of the following products was the first to implement true relational algebra in a PC DBMS? IDMS R:base dBase-II Oracle IDMS R:base dBase-II Oracle ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: can only be one column. identifies a row. must always be composed of two or more columns. identifies a column. can only be one column. identifies a row. must always be composed of two or more columns. identifies a column. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types. Data structure None of these Table Database Flat file Data structure None of these Table Database Flat file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System What is the abbreviation used for a software package that permits the users to create, retrieve and maintain records in a database? DASD FMS DBMS EMMS None of these DASD FMS DBMS EMMS None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database is called "self-describing" because it contains a description of itself. False True False True ANSWER DOWNLOAD EXAMIANS APP
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