1.Descride two primary method of integriting information across multiple database?
-Firstly forward integration takes information entered into a given system and send it automatically to all downstream system and process.Secondly backward integration takes information entered into given system and send it automatically to all upstream system and process
2.Describe the benefit of data-driven web site ?
-allow the website owner to make changes any time,a statis website requires a programmer to make updates,having a data-driven website enables to site to grow faster than would be possible with a static site and even the most competent programmer charged with the task of maintaining many pages will overlook things and make mistakes.
3.Define the fundamental concept of the rational database model?
-fundamental concept of rational database model have two types firstly entities and attributes.Entities in the rational database model is the person ,place,thing,transaction or event about which information is stored.Attributes also called fields or colums are characteristic or properties of an entity class.Secondly keys and relationships.
4.Evaluate the advantages of the rational database model?
-Firstly increase flexibility.increased scalability and performance,reduced information redundancy,increased information integrity(quality) and increased information security.
5.Compare operational integrity constraints and business-critical integrity constraints?
-operational integrity constraints are rules that enforce basic and fundamental information-based constraints.Business-critical integrity constraints are rules that enforce rules vital to an organization success and often require more insight and knowledge than operational integrity constraints.
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