A company provides reimbursement of mobile phone subscription charges to its employees belonging to the managerial cadre and above. The following record structure captures the details. employee number, which is designated as the primary key, is a numerical 3-digit key. type refers to a post-paid or pre-paid class of subscription to the mobile service. subscription charges refer to the charges incurred by the employee at the end of every month. employee number designation mobile number type Subscription charges For a sample set of records implement the file as a) an array of records (block size = 1), and b) an array of pointers to records (assume that each pointer to a record is a linked list of two nodes, each representing a record. In other words, each block is a linked list of two nodes (block size = 2)).

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A:

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Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.