Small businesse's may need to ask, what reasons exist to bother not using a licensed software in the first place. Current database software complexity means that new IT employees will take longer to train, and new employees longer to familiarize themselves with your setup. You may also, simply, think that it is too expensive to continue paying the support costs associated with using licensed software. Really, nothing is truly free, but not needing to pay licensing fees from open source software will allow you to focus on the more important costs. Not only should you have lowered costs, but a much more customizable solution for you business needs.
You should also take what you will use the database for into account, will be high use or merely long term storage. You can get various tradeoffs with design, some databases trade speed of access for reliability and resiliency, others do the opposite. Some simple software like plain SQL was just designed for occasional use, and won't hog all the computer's resources to itself. Choices vary from Microsoft Access for windows interoperability to Redis which targets Linux. A database software intended for the personal computer or work group and although it doesn't offer as much security as a more complex program would, it is more user friendly.
Be sure to consider the long term support and maintenance of you database. Oracle has a tiered approach to support, with the best support at the extremely expensive end. They tends to have the only workers that can support their software, so they are very overworked. One good option to ensure that you have a good pool of employees is to look at the community of tech workers around the database software. It's likely you'll locate more database experts, if you switch from Oracle to Postgres for example. A staunchly supportive community is surrounding Postgres SQL, it is a strong contender for upcoming generation database software.
Data migration between databases can be a difficult task. You will need to choose a good database software to switch over to that will last you in the long term. In getting started, you should make a list of what is needed right now, what you don't like about the current software, and what your plans are for the future. Deliberate thought will help ensure a good choice and successful transition.
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If you need more insight on this matter, feel free to click on data migration or through business disaster recovery services.
http://www.postgresmigrations.com/data-migration
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