6.7-Database design, three main paradigms

I. Database design    software development:        Requirements Analysis        Summary Design        detailed design        code writing test on-        line deployment    er diagram:    picture er diagram:           Visio           Edraw II,    the first paradigm of the three paradigms:        ensuring the atomicity of each column the        second paradigm of the smallest data unit in which each column is non-divided    :        requires that each table only describes one thing    third paradigm        if a relationship satisfies 2NF,        and no columns other than the primary key are passed dependent on the primary key column,        then the third normal form (3NF) is satisfied. JDBC    Java Connection Database technology    DriverManager: Managing the JDBC driver depending on the database    Connection: Responsible for connecting to the database and serving the task      of transmitting data Statement: Generated by Connection, responsible for executing the SQL statement    ResultSet: Responsible for saving the query results resulting from the Statement execution    procedure of the JDBC operations database

6.7-Database design, three main paradigms