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Readies the file for access, and associates a pointer that will refer to a current file record at each point in time FIND Searches for the first file record that satisfies a certain condition

 Readies the file for access, and associates a pointer that will refer to a current file record at each point in time. ? FIND: Searches for the first file record that satisfies a certain condition, and makes it the current file record. ? FINDNEXT: Searches for the next file record (from the current record) that satisfies a certain condition, and makes it the current file record. ? READ: Reads the current file record into a program variable. BITS Pilani, Hyderabad Campus ? INSERT: Inserts a new record into the file & makes it the current file record. ? DELETE: Removes the current file record from the file, usually by marking the record to indicate that it is no longer valid. ? MODIFY: Changes the values of some fields of the current file record. ? CLOSE: Terminates access to the file. ? REORGANIZE: Reorganizes the file records. For example, the records marked deleted are physically removed from the file or a new organization of the file records is created. ? READ_ORDERED: Read the file blocks in order of a specific field of the file.

 

Jun 14 2020 View more View Less

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