What is LAST_DDL_TIME? Generally speaking, LAST_DDL_TIME means the last change date time of the object definition, all by Data Definition Language (DDL). But sometimes, it's… Read More »LAST_DDL_TIME was Changed, Why?
Truncate vs Delete Here I compare the differences between TRUNCATE and DELETE an entire table in the following chart. Question Truncate Table Delete From DDL… Read More »Truncate vs Delete
What is DB Link? A database link is a kind of schema object in a database that enables users to access and manipulate objects on… Read More »DB Link, How and Why
Types of SQL Statements SQL statements in relational database management system (RDBMS) could sometimes be too complicated to be analyzed for. As SQL developers, we… Read More »4 Types of SQL Languages in RDBMS