Microsoft's Access Database is extremely special database popular and is adequate for most company applications. But Microsoft's Access is meant for small projects with few users. As frequently happens, a small Access application grows and slowly becomes the heart and soul of a company administration special database system. As volumes and the number of users increase, the limitations of Microsoft Access soon become apparent. Slow response times, routines that hang, esoteric error messages, unstable functions, security issues and data corruption are common special database symptoms.
When the Access system needs to support more special database features, more records and more users, a robust BackEnd database system such as SQL Server is required. There is less Chance of Data Corruption. In Access, the database MDB file is opened directly. If the network connection is unexpectedly broken or a PC or the Server special database computer breaks down, you are almost guaranteed that data will be corrupted. SQL Server is different - it runs as a service. The Front-End Access database does not have direct access to the Backend database file. If the server shuts down unexpectedly or the network connection is broken, the integrity of the data is special database maintained.
Database Log Files Enable Data Recovery. SQL Server has a distinct special database advantage over Access in that all transactions (database updates, insertions and deletions) are kept in a log file. The log records contain all the changes to the data and enough information to undo the modifications made during special database each transaction. In the event of system failure, the log file can be used to recover the data. Access supports a maximum of 255 concurrent users. But this is a theoretical limit, bearing no relationship to reality. In the real world, it is common to experience major performance issues with as few as 10 users (and sometimes much less) attempting to simultaneously use the special database Backend Access database over a network.