System Life Cycle (SLC). Database System life cycle: – Investigation: – During investigation step,..

System Life Cycle (SLC). Database System life cycle: – Investigation: – During investigation step, the database designers must talk to the customers (database users) to understand the proposed system and obtain and document the data and functional requirement. The requirements should not describe how the data is processed, but it should include what are the attributes, data items, what constraints apply and relationships between the data items. The aim of investigation is to obtain a detailed description of the data that will suit user requirements so that both high and low-level properties

»System Life Cycle (SLC). Database System life cycle: – Investigation: – During investigation step, the database designers must talk to the customers (database users) to understand the proposed system and obtain and document the data and functional requirement. The requirements should not describe how the data is processed, but it should include what are the attributes, data items, what constraints apply and relationships between the data items. The aim of investigation is to obtain a detailed description of the data that will suit user requirements so that both high and low-level properties of data and their use are dealt with. These include properties such as the possible range of values that can be permitted for attributes. System Design: – [Under this heading, describe or otherwise present the proposed project’s system life cycle (SLC). Do not confuse this with the system development life cycle (SDLC). The SLC, which has roots in systems engineering, covers the system from initiation to disposal. At minimum, the SLC includes these phases: planning, acquisition, implementation, operations, and disposal. Depicting the SLC is usually best accomplished using a graphic with a timeline. It is sometimes (not always) advantageous for the graphic to go a little deeper into the principal phases and show key activities, reviews, and milestones that may be of special interest to executive reviewers. An example could be an acquisition project involving outsourcing and executives might want to know when the outsourcing agreement is scheduled to be signed.] The Development phase is when the real work begins—in particular, when a programmer, network engineer and/or database developer do work on the project. This work includes using a flow chart to ensure that the process of the system is properly organized. The development phase marks the end of the initial section of the process. This phase signifies the start of production. The development stage is also characterized by instillation and change. Execution: – The Execution phase is where most of the code for the program is written. Additionally, this phase involves the actual installation of the newly-developed system. This step puts the project into production by moving the data and components from the old system and placing them in the new system. Both system analysts and end-users should now see the realization of the project that has implemented changes. Maintenance: – This phase involves maintenance and regular required updates. This step involves if user wish, to boost performance, add new capabilities or meet additional user requirements. ANY TOPIC IN IT ACQUISITION.

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