What is a Unique key?
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- AWSDid you know that the top 15 certifications that people enroll in include Amazon AWS? It is a cloud computing service provided by Amazon. You can create, test, release, and manage applications and services with its help. All of this is accomplished using Amazon-managed data centers and hardware. It is also one of the most widely popular and financially rewarding IT careers in the world. Since most of the major companies in the world have either already moved their data to the cloud or are about to do so, most professionals are also trying to improve their skills in this area. We cover topics that are frequently asked in the fields of the cloud, Amazon AWS, and other related technologies in this article on Amazon AWS interview questions.
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- PythonHave you wondered what it is in Python that got people looking towards IT jobs in a new light? Python’s popularity is soaring because of its simplicity and capacity to perform various functionalities with simple coding. Due to its ability to support complex computations utilising powerful libraries, Python is also utilised in a variety of domains, including Data Science, Web Development, Machine Learning, Artificial Intelligence, etc. As a result, Python coding jobs are in great demand both in India and internationally. The most frequently asked Python interview questions and answers are covered in this article, which will help you ace your toughest interviews.
- SAP MMThere are many jobs that could require you to answer questions about SAP MM in an interview, such as a consultant, an SAP functional analyst, a purchase executive, etc. These questions are designed to help an interviewer test your understanding of your role and the responsibilities that come with it. In this article, we explore topics from basic common SAP MM interview questions for freshers to in-depth concepts that have questions about modules, master data, etc.
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Each database record was uniquely recognised by a unique key constraint. As a result, the column or group of columns gains uniqueness.
An automatic unique constraint is defined on a primary key constraint. But with Unique Key, this is not the case.
There can be multiple unique constraints defined for each table, but there can only be one primary key constraint.