Description Of A Network Database - 2169 Words

Contents Introduction 2 Types of database 2 Network Database 2 Object Database 2 Flat File Database 3 Relational Database 3 Database methodologies 4 Conceptual Model 5 Logical Model 5 Physical Model 6 Explanation of Logical Data Model 7 Entities and Attributes 7 Relationships 8 One to Many 8 One to One 9 Entity Relationship Diagrams 9 INTRODUCTION This report is about different types of database and explaining the advantages and disadvantages of network databases and object databases. TYPES OF DATABASE Databases store digital data, it also manages the data that is stored, because of this it also an information manager. Network Database A network database model allows many records to be linked to the same owner file. The multiple records and links allow this database type to be very flexible and accessible. It is a many to many relationship which means that there multiple relationships between each files which is what gives it great flexibility and easy access. On the other hand it is often difficult for first time users, if the database needs to be altered when it is finished the new information could change the entire database. The World Wide Web is an example of a network database as different pages are related to each other. Object Database Object databases don’t store data they store objects instead. An object is given an identity so it can be referenced. Objects consist of attributes and methods. Attributes are characteristics that define theShow MoreRelatedComponents Requirements For A Bank Operator1188 Words   |  5 Pagesfunctional requirements of bank customer are: 1. User Login 2. View balance 3. Withdraw cash 4. Perform deposit b) Bank operator The functional requirements for a bank operator are: 1. System startup 2. System shutdown c) Bank network system The functional requirement for bank network system is 1. Bank session_operation Non-functional requirements for the system are: 1. Reliability 2. Availability 3. Security and 4. 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