Why Do Relational Databases Use Primary Keys and Foreign Keys?

Why Do Relational Databases Use Primary Keys and Foreign Keys? The name says relational database. The database relationships can be defined with respect to key columns. These key columns can be identified based on cardinality. This is the reason why Relational Databases Use Primary Keys and Foreign Keys. Let us take an example of the … Read more

MySQL vs PostgreSQL vs SQL Server

MySQL versus PostgreSQL versus SQL Server and TheTop 7 Features of SQL Database. Hey everyone in this article we’ll be discussing the three most popular relational databases MySQL vs PostgreSQL vs SQL server and the Top 7 Features of SQL Database. Here we share our delivery insights in the tech industry. MySQL is a definite … Read more

PLSQL Program to find Fibonacci Series

In this article, we will see how to write PLSQL Program to find Fibonacci Series. As per the portrayal of the Fibonacci series, first, two math are 0 and 1 and each later number is the sum of the precedent two math in the series. Fibonacci series. Following are the places where we can implement … Read more

SQL Date Formats List Updated(2020)

Here are the SQL Date Formats List. You can try yourself and look for the output. These SQL date formats list are useful in your interview point of view and also can be used in your professional SQL work environment depends on your requirements. Select TO_CHAR(date_column, ‘DD-MON-YYYY’) from emp21;Formats:d,dd,dddmm,mon,monthy,yy,yyy,yyyy,year select to_char(sysdate,’dd-mm-yyyy hh:mi:ss’) from dual; Select … Read more