1. Network Database SystemPrepared by Sir Gio 2. Network Model Another widely used in data model Many-to-Many relationship Owner – parent record Member –…

1. Chapter A:Network Model Basic Concepts Data-Structure Diagrams The DBTG CODASYL Model DBTG Data-Retrieval Facility DBTG Update Facility DBTG Set-Processing Facility Mapping…

1. Chapter B:Hierarchical Model Basic Concepts Tree-Structure Diagrams Data-Retrieval Facility Update Facility Virtual RecordsMapping of Hierarchies to Files The IMS Database…

1. Chapter B:Hierarchical Model Basic Concepts Tree-Structure Diagrams Data-Retrieval…

LOTTE PAKISTAN PTA UTY Plant Operating Procedure T-11 UTILITIES PALNT ETP plant (Revision: 01) Name Signature Date Author Muhammad Ismail Reviewed By Rehan Siraj Table of…

1. Chapter A:Network Model Basic Concepts Data-Structure Diagrams The DBTG CODASYL Model DBTG Data-Retrieval Facility DBTG Update Facility DBTG Set-Processing Facility Mapping…