Databases store data that can be sorted in almost infinite ways. They are the computer equivalent of file cabinets which traditionally held paper forms. Virtually any business can use a database to store customer information, patient records, etc.
Database management systems are typically used for organizing data within a database. The data is organized so that it can be retrieved and stored in the most efficient manner possible.
There are lot of Database Management systems that run on Linux, but MySQL and PostgreSQL seem to be the mostly used Database Management systems.
A Custom Database is used for improving the usability of a database by customizing or controlling the contents. Custom Databases will leave paper based systems behind.
Oracle database systems training is probably the most valuable and you can find lots of programs on-line that will help you get dba certified.
no they are not
There are four basic and main database management systems that are used today. Those four include hierarchical, network, relational and object-oriented.
There are currently 3 general categories of data base management systems in use today:relational database systemsmultidimensional database systems (often referred as 'cubes')object oriented database systemsPrior to the success of relational database systems (early 80's) there were also hierachical database systems and network (aka CODASYL) database systems.
1 Explain architecture of Distributed Database systems? Also, explain the reasons for building distributed database systems?
The SQL database is the most common way to handle the data contained in a database. The type of database most often used (for example using the Microsoft Access software) is a relational database. SQL is the programming language behind a relational database. It provides for ways to organize and retrieve the data stored in the database.
When setting out to provide information to an organization or your employer as to why database systems should be used, provide information that is personal to them. Gather data and show proof that database systems would improve efficiency and be a good move for them.
Larry Kerschberg has written: 'Proceedings of the Second International Conference on Expert Database Systems (Benjamin/Cummings series in database systems and applications)' 'Expert Database Systems'
If you are a starting Database Administrator with experience and knowledge in Oracle Database Management Systems you can expect to be compensated within the range of $38K - $42K per year.