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What is the main goal of RAID technology? Describe the levels 1 through 5. RAID stands for Redundant Array of Inexpensive (or sometimes "Independent")Disks. RAID is a met
brief history,definition,current trends and future trends if any of data fragmentation
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
This language that enable user manipulate to or access data as organized by appropriate data model. Low level or Procedural DML : DML needs a user to specify what data ar
lock and types of lock
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
Question 1: Define the term business intelligence tools? Briefly explain how the data from one end gets transformed into information at the other end? Definition Exp
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
Explain the Aggregation implies concurrency Concurrency actually is: This in objects can be identified by the way they change state. Present objects can change state independen
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