1. True.. 2. True. 3.. The global database system catal

Added on - Sep 2019

Trusted by 2+ million users,
1000+ happy students everyday
Showing pages 1 to 1 of 1 pages
1. True.2. True3. The global database system catalog is logical description of wholedatabase, if it is not in disrupted form. It contains the definition of entitiesthat are the tables in database, relationship among the table along with itstype, constraints and security. The function of global database system isthat it provides the physical data independence from the distributedenvironment and it also provides the logical data independence.4. Splitting a large heavily heavily used table across devices on separatephysical disks will improve the efficiency because when all the tables onthe same disk it will take time to scan whole database one by one but whenthey are separated on the different disks system will search the data on allthe disks simultaneously and produce the result in minimum time.5. True
Desklib Logo
You are reading a preview
Upload your documents to download or

Become a Desklib member to get access