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As early as a decade ago, setting up a data warehouse meant that you had to literally purchase very expensive hardware appliances and then c...

Hello guys, recently, I have to work on a high profile project which involves migrating a live database from one server to another server a...

PostgreSQL is one of the most popular databases after the big three - Oracle , SQL Server , and MySQL . PostgreSQL is commonly known as Pos...

 Hello guys,  If you're aiming to break into the data engineering field or looking to boost your career with a recognized credential, t...

Since a primary key is nothing but a constraint, you can use the  ALTER clause of SQL to add a primary key into the existing table. Though...

You can increase the length of a VARCHAR column without losing existing data in SQL Server. All you need to do is execute the following ALT...

Hello folks, f you have been thinking of learning Oracle and PL/SQL in 2025 and looking for the best online resources like books, courses, a...

If you an experienced programmer and know how to write SQL queries and database fundamentals but want to take your SQL and database skills ...

In last summer, I had to work on a Java project which was using the Oracle database at their backend. The project was a mix of Java code wi...

Hello guys, the database administrator is one of the most in-demand jobs in the technology sector since companies need someone who manages a...

Though it's not mandatory for Java or Web developers to learn the NoSQL database, the world is moving in that direction, and both Jav...

Hello guys, we are already in the second week of New year, and everyone is talking about their goals to improve them as a better person, a ...

MongoDB is one of the leading NoSQL databases and it was on my radar for a long time but I never get a chance to learn or work on it, but ...

Hello guys, if you are a computer science graduate or new to the programming world, interested in learning SQL, and looking for some excell...

SQL is one of the most important skills for any programmer be it a Java , C++ , Python , JavaScript , or Ruby developer. Almost 95% of the J...

The database design and modeling are one of those topics which rarely get the attention they deserve, especially at the start of the projec...

Hello guys, if you are wondering how to find duplicate values in a table then don't worry, there are many ways to find duplicate rows or...

Hello Guys, you might have heard about how useful the EXISTS clause is helpful in writing sophisticated queries. Still, at the same time, I...

The Select command in SQL is one of the most powerful and heavily used commands. This is I guess the first command anyone learns in SQL e...

JDBC API in Java allows the program to batch insert and update data into the database, which tends to provide better performance by simple...