All courses in: database-basics
What is Database?
A database is a collection of information that is organized so that it can be easily accessed, managed and updated.
Data is organized into rows, columns and tables, and it is indexed to make it easier to find relevant information. Data gets updated, expanded and deleted as new information is added. Database tutorial process workloads to create and update themselves, querying the data they contain and running applications against it.
Evolution of databases
Online SQL Database have evolved since their inception in the 1960s, beginning with hierarchical and network databases, through the 1980s with object-oriented databases, and today with learn MYSQL online and NoSQL databases and cloud databases.
In one view, databases can be classified according to content type: bibliographic, full text, numeric and images. In computing, databases are sometimes classified according to their organizational approach. There are many different kinds of databases, ranging from the most prevalent approach, the relational database, to a distributed database, cloud database or NoSQL database.
A relational database, invented by E.F. Codd at IBM in 1970, is a tabular database in which data is defined so that it can be reorganized and accessed in a number of different ways.
Relational databases are made up of a set of tables with data that fits into a predefined category. Each table has at least one data category in a column, and each row has a certain data instance for the categories which are defined in the columns.
The Structured Query Language (SQL) is the standard user and application program interface for a relational database. Relational databases are easy to extend, and a new data category can be added after the original database creation without requiring that you modify all the existing applications.
What is SQL?
Structured Query language (SQL) is standard language for dealing with Relational Databases.
Oracle SQL tutorial for beginners can be effectively used to insert, search, update, delete database records.
That doesn't mean SQL developer tutorial cannot do things beyond that.
SQL Tutorial for beginners as Relational databases like MySQL Database, Oracle, Ms SQL server, Sybase, etc uses SQL !
NoSQL databases are useful for large sets of distributed data.
NoSQL databases are effective for big data performance issues that relational databases aren't built to solve. They are most effective when an organization must analyze large chunks of unstructured data or data that's stored across multiple virtual servers in the cloud.
Items created using object-oriented programming languages are often stored in relational databases, but object-oriented databases are well-suited for those items.
An object-oriented database is organized around objects rather than actions, and data rather than logic. For example, a multimedia record in a relational database can be a definable data object, as opposed to an alphanumeric value.