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Exercises 1.? True/False. (1) ?A pointer is a data item in one record that identifies the storage location of another logically related record.( ) (2) ?A data base is a collection of logically related data elements that are structured in various ways to meet the multiple processing and retrieval needs of organizations and individuals.( ) (3) ?The programs in a DBMS package establish an interface between the database itself and the users of the database.( ) (4) ?DBMS cannot structure and tie together the logically related data from several large files.( ) (5) ?In a computer system, these records that are logically contiguous in one application must ?be physically stored together.( ) (6) ?The physical location of the stored records in many computer-based information ?systems is invisible to users.( ) 2. ?Match the following terms to the appropriate definition. (1)? database (2)? database management system (DBMS) (3) ? hierarchical approach (4) ? network approach (5) ? Pointer (6) ? relational approach (7) ? data integrity (8) ? data security a. ?Storage of data in which records are related by a linked list of pointers. b. ?A collection of one or more files treated as a whole unit. c. ?Storage of data in which records are divided into an inverted tree based on master/subordinate field relationships. d. ?Software that organizes, manipulates, and retrieves data stored in a database. e. ?Storage of data in which horizontal rows designate records and vertical columns designate fields. f. ?An identifier that indicates the location of a record. g. ?Protection of a database against access or modification without authorization. h. ?Protection of a database against invalid alteration or destruction. Unit 11 DataBase Unit 11 DataBase Passage A Database: A Better Way to Manage and Organize Data Passage B DBMS and Data Independence, Integrity, Security
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