(c) A project plan was constructed and the network was designed for designing, writing and installing a bespoke computer database. The critical path and the shortest time to completion is identified as follows:
= Contract negotiation User discussions Review current system Systems analysis (a) Systems analysis (b) Programming Preliminary testing Documentation preparation Implementation Debugging Manual.
(d) This project can be controlled by monitoring and controlling the critical activities and reducing lead time on the other activities which do not contribute towards the critical path. The important activities that need monitoring and control may be the Systems analysis, programming, testing, documentation, implementation and debugging.
(a) The main advantages of holding an inventory are that losses due to unexpected changes in demand and deliveries from suppliers can be avoided and it is a safety net against backorders. The main disadvantages of holding inventory are the increased holding costs incurred due to higher rental value of the space occupied, higher premiums, the danger of the inventory losing its value or becoming obsolete and the loss of money in opportunity costs.
The assumptions made are that the demand rate is known and it is uniform (constant), the ordering cost is constant, quantity discounts do not exist, the p ...