What are the Issues when Selecting a Database 
Issues when Selecting a Database 
-  Storage space requirement: A database requires about triple storage space of the actual data. 
 
-  Response time: The response time of database for input/output or communication bound (in case of the distributed databases) request. 
 
-  Locking modes pessimistic locking: Lock before accessing an object 
 
-  Optimistic locking: Read and writes can freely occur (high degree of concurrency). 
 
-  Administration: Modern DBMS requires specially trained staff to set up security policies, prepare backups, manage the disk space, monitor performance and fine-tune the performance.