A corporation reimburses its employees in the managerial cadre and above for their mobile phone subscription costs. The information is captured in the record structure below. Employee Number is a three-digit numerical key that is designated as the primary key. type describes a pre-paid or post-paid class of mobile service subscription. The expenses incurred by the employee at the end of each month are referred to as subscription charges. Type of mobile number: employee number designation Subscription\scharges Implement the file as a) an array of records (block size = 1) for a sample set of records. 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)).
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
A corporation reimburses its employees in the managerial cadre and above for their mobile phone subscription costs. The information is captured in the record structure below. Employee Number is a three-digit numerical key that is designated as the primary key. type describes a pre-paid or post-paid class of mobile service subscription. The expenses incurred by the employee at the end of each month are referred to as subscription charges.
Type of mobile number: employee number designation Subscription\scharges
Implement the file as
a) an array of records (block size = 1) for a sample set of records.
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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