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Data warehousing Course benefits-
• Learn the fundamentals of data warehousing
• Understand a tried and tested lifecycle for data warehousing projects and learn the how to avoid the typical pitfalls organisations face when implementing business intelligence solutions.
• Includes a range of tools and techniques to apply to real world data warehousing and business intelligence projects.
• Learn how to apply your new skills and knowledge to your own data warehousing projects.
• Gain experience through real life practical exercises and workshops
If the program caters to your need and fits in your selection criteria, then you can proceed.
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Difference between ArrayList and Vector in Java
ArrayList and Vector are two of most used class on java collection package and difference between Vector and ArrayList is one of the most frequently asked java interview question on first round or phone interview. Though it's quite a simple question in my opinion but knowledge of when to use Vector over ArrayList or does matter if you are working on a project. In this article we will some point based difference between Vector and ArrayList in Java and trying to understand the concept behind those differences. Ultimate goal is to familiarize yourself with distinguish property of ArrayList and Vector. By the way Java 5 adds another implementation of List interface which is similar to Vector and ArrayList but provides better concurrency access than Vector, its called CopyOnWriteArrayList. By the way this is the third article on discussing about Collection interview question, Difference between LinkedList and ArrayList and List vs Set are other popular interview questions based upon collection framework in Java.
Before seeing differences between Vector and ArrayList, let's see some similarities between these two and why we can use ArrayList in place of Vector on certain scenario.
1) Vector and ArrayList are index based and backed up by an array internally.
2) Both ArrayList and Vector maintains the insertion order of element. Means you can assume that you will get the object in the order you have inserted if you iterate over ArrayList or Vector.
3) Both Iterator and ListIterator returned by ArrayList and Vector are fail-fast.
4) ArrayList and Vector also allows null and duplicates.
Vector vs ArrayList in Java
Now let's see some key difference between Vector and ArrayList in Java, this will decide when is the right time to use Vector over ArrayList and vice-versa. Differences are based upon properties like synchronization, thread safety, speed, performance , navigation and Iteration over List etc.
1) Synchronization and thread-safety
First and foremost difference between Vector and ArrayList is that Vector is synchronized and ArrayList is not, what it means is that all the method which structurally modifies Vector e.g. add () or remove () are synchronized which makes it thread-safe and allows it to be used safely in a multi-threaded and concurrent environment. On the other hand ArrayList methods are not synchronized thus not suitable for use in multi-threaded environment. This is also a popular interview

Human Resources is only a branch or department of the entity. Its purpose revolves around the people that work for the entity--employees, laborers, administrators, and so on. These are a type of resource--human resource--since resources include many other things like land (natural resource), machinery (capital), etc. Everybody counts because everybody collaborates with something in order for the entity to function properly; everybody has a task or several tasks. Therefore, this Human Resources part is in charge of supervising these people, assuring work environment quality (individual and collective), searching for new and efficient resources (new employees, so to speak), and everything else related while also remaining in accord with the Adminitration's requests/preferences/policies and with the law