They are stored on a hard drive or some other permanent storage device. The database application stores a table that identifies related files.
DBMS utilities
What problem can occur if a student database is not maintained
Datafile is a group of files in each table space in an Oracle database. Database files are all files that are found within the database.
* Database datafiles - contain the data itself * Control files - binary files containing information about the database (name, files, backup...) * Online redo logs - files, which record every transaction in the database * Parameter files - database parameter file * Other database related files - password files, alert log, trace files...
1. banking 2. files maintained in colleges. 3. finger print recognition ( security purpose ) 4. marketing
database
No
simply files are stored in database in upper to lower order.
database is a collection of different files
are structured and organized data stored in database files
It depends on how you deploy your site. It is recommended that video and image files be stored outside of your database. That said this is more a question of how much hard drive space you need. Your database size will be influenced by how the database is built, the functionality of the application which speaks to how much detail is maintained in the database, and how many records (number of customers as an example) you will have. There will also be credit card transactions that need to be maintained in a database for years, pointers to your content which should be database driven, and other factors. In short it is not possible to blindly answer this question with any level of accuracy.
You do not need any control files to create a database; the control files are created when you create a database, based on the filenames specified in the CONTROL_FILES parameter of the parameter file.