JAVA DATABASE PROGRAMMING

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Download free Java Database Programming pdf ebook. A relational database organizes data in tables. A table has rows (or records) and columns (or fields). Tables are related based on some common columns to eliminate data redundancy. A high‐level language called Structure Query Language (SQL) had been designed for structuring, querying and changing the data in a relational database. SQL defines commands such as SELECT, INSERT INTO, DELETE FROM, UPDATE, CREATE TABLE, and DROP TABLE.

SQL statements are intuitive. Assume that we have set up a table called “books” as follows. The table “books” has five columns: isbn, title, author, price and qty. SQL has its own data types: ibsn and qty are INTEGER; title and author are variable‐length string (VARCHAR) of up to 50 characters; price is FLOAT.

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