Basic database concept and sql basic history of database concept: dbms, rdbms, ordbmsadvantage of oracle database and version informationinterface tools usage: sqlplus, isqlplus, sqldeveloper, toadsql language overview : dql, dml, ddl, dcl, tclwhat is the usage of ansi standard.Select command - column alias rules, string data, concatenations with various datanull value handling with number and characters, arithmetic operatorconcatenation operator, eliminating duplicate rows