CREATE TABLE product ( product_id NUMBER(3) PRIMARY KEY, product_name VARCHAR(30) NOT NULL, price NUMBER (3,2) CHECK (price > 0), quantity NUMBER(3) CHECK (quantity BETWEEN O AND 1000), color_code NUMBER(2) CHECK (color_code >= 0 and color_code < 3)

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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.