There are different kinds of software implementation strategy. The software implementation strategy would you recommend in this situation to allow users fall-back access to the old system as the new one is implemented is parallel start up.
- Parallel running often called parallel start up strategy for system changeover where a new system slowly takes over the roles of the older system even when both systems operate.
This conversion often occur when the technology of the old system is outdated and as such a new system is needed to be installed to replace the old one.
The parallel running phase is the act of changing a fragment of business information technology operation to a new system.
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Answer:
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Explanation:
A partial dependency exists.
We have two types of dependency. The partial dependency and the transitive dependency.
The answer here is partial dependency. It occurs when the attribute only depends on some parts of the element. In such attribute, the primary key is the determinant.
It can be shown as;
XY→WZ , X→W and XY is the primary key or the only candidate key
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Answer: Access control
Explanation:Access control is the type of security facility that is provided to the systems in an organization. The functions carried out in maintaining the security of the system is done by authenticating , authorizing and identification of the users and related components . They are secured using the PINs , passwords, bio-metric scan etc.
The situation of the user wanting to have a unrestrained access towards data as well as maintaining the security is the done by access control.
