Oracle: Creating Tables
In Oracle, CREATE TABLE statement is used to create a new table in the database. To create a table, you have to name that table …
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In Oracle, CREATE TABLE statement is used to create a new table in the database. To create a table, you have to name that table …
SQL is a language to operate databases; it includes database creation, deletion, fetching rows, modifying rows, etc. SQL is an ANSI (American National Standards Institute) standard language, …
A relational database is a set of formally described tables from which data can be accessed or reassembled in many different ways without having to reorganize the database tables. …
Physical database design translates the logical data model into a set of SQL statements that define the database. For relational database systems, it is relatively …
A functional decomposition is the process of breaking down the functions of an organization into progressively greater (finer and finer) levels of detail. In decomposition, one function is …
Microsoft Access: Microsoft Office Access, previously known as Microsoft Access, is a relational database management system from Microsoft that combines the relational Microsoft jet database …
The database management system can be divided into five major components, they are: Hardware Software Data Procedures Database Access Language Let’s have a simple diagram …
Hierarchy Data Model This database model organises data into a tree-like-structure, with a single root, to which all the other data is linked. The heirarchy …
Relational Data Model In this model, data is organised in two-dimensional tables and the relationship is maintained by storing a common field. This model was introduced by …
Compared to the File Based Data Management System, Database Management System has many advantages. Some of these advantages are given below: Reducing Data Redundancy The …