Design Guide for CODASYL Data Base Management Systems |
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ACCESS CONTROL accessed record ACCOUNTING AUDIT analysis BACKORDERS BILL-OF-MATERIALS STRUCTURE bytes calc key calc records calc-via COBOL CODASYL database CODASYL specifications conceptual schema CUST record CUST-IDENT-ID CUST-NAME-DESC CUST-ORD CUST-SHIPTO CUSTOMER ID CUSTOMER NAME data dictionary data flows database administrator database key database management system database procedure DBCS DBMS delete disconnected Entity type example Figure illustrates implementations implementor inputs key values line items LNITM records LOCATION MODE lock many-to-many member record type normally OBTAIN OOAK operation option ORD record ORD-LNITM set ORD-NUMBER ORD-NUMBER-ID order entry system ORDER NUMBER outputs OUTSTANDING ORDERS owner record type pointer arrays pointer chains primary key prior problem record PROD PROD-CODE PROD-LNITM PRODUCT ID QUANTITY SHIPPED RECORD NAME record occurrence retrieval run unit secondary key secondary storage SET NAME set occurrence set selection set type SHIPPING ADDRESS SHIPPING PAPERS SHIPTO records SHIPTO-ORD sorted set storage schema stored subschema update USAGE CHARACTER PICTURE