1. ID Last Name First Name Userid Salary Create the My Employee table with the following fields: Not Null Number(4) Varchar(25) Varchar(25) Varchar(8) Number(9,2) 2. Add the constraint Primary Key (ID) to the table. 3. Insert the following data to the table: ID Last Name First Name Ali 1 2 3 4 5 AlChameri AlAnizi Hejazi Turki AlKamel Rayen Decham Mohamed Fahhed 4. Select all the data in the table. Userid raptel bdancs bbiri cnewman aropebur I Salary 795 860 1100 750 1550
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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