http://www.dbtalks.com/articles/Watch articles from DBTalks© 1999 - 2015 Mindcracker LLC. All Rights ReservedIn this article we will discuss the basic concepts of Oracle Database. Oracle database is a relational database management system that was developed by the Oracle Corporation in 1977 by Lawrence Ellison and other developers.http://www.dbtalks.com/article/introduction-to-oracle-database2/3/22/2016 12:00:00 AMAbhishek SinhaIn this article we will discuss about the built-in datatypes in Oracle. In oracle, each ‘column value’ and constant in SQL expression has a ‘DataType’. http://www.dbtalks.com/article/datatypes-in-oracle/4/26/2016 12:00:00 AMAbhishek SinhaIn this article we will discuss about Dual table in Oracle database. The DUAL Table is a special one-row table present by default.http://www.dbtalks.com/article/dual-table-in-oracle/4/26/2016 12:00:00 AMAbhishek SinhaIn this article you will learn about locks in PostgreSQL. PostgreSQL is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards-compliance.http://www.dbtalks.com/article/locks-in-postgresql/4/5/2016 12:00:00 AMAbhishek Sinha