1. 3. Find out Stud_section, average of SQL, average of WebApp. average of Mathematics group by section. STUDENT_MARKS Studentld StudentName Gender SQL WebApp Mathematics Course_Section 46J12035 Azhila 78 59 89 1 46S11114 Sulthan 88 78 87 1 46J21113 Rashid M 67 69 71 1 46J22145 Mahmood 77 76 79 46S11111 Moosa M 69 71 72 46S21456 Mohammed 86 78 91 1 46J14569 Reshma F 76 86 77 46J24689 Fatma F 88 86 81 2. 46J13564 Amani F 79 89 88 1 46J12456 Noor 78 79 76
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.
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