What are database links in the reference of distributed system or distributed database technology? Database is a file that can be linked from the tables and their attributes included in the table. The database links provide the connection of data sharing to each other in the distributed system or distributed database models. The database links allow access to the information and retrieved from the database linked from the tables of other database files. The user can access information from single or multiple through query performance which is possible through the database links. This database link provides information according to the user’s locations to access their information quickly because the website is based on a distributed database model to provide data access from nearby and the user performs the query from the nearby server to the database. In the context of distributed systems or distributed database technology, database links are connections that allow a database to commun...
What is cache memory? How is it different from primary memory? Definition of cache memory Cache memory is a high speed memory built in the processor and used between the main memory and the processor. 1. Cache is memory is placed between the CPU and the main memory. fig: describe the cache works between CPU & main memory. 2. Cache memory is faster than the main memory . fig: The Cache memory is faster than the main memory according to working performance. 3. Its access time is less than the main memory . fig: Cache performance of access time lower than main memory. 4. According to measurement the cache memory access time is 10 to 30 nano second (ns) and the main memory access time is 80 (ns) nano second . table of access time of both memory. 5. The Cache memory stores instructions and data that are immediately executed. fig describes that cache memory stores Instructions & Data but sometimes it don't stores data. 6....