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Modular growth:In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat free. This flexibility permits an organisation to expand gradually. Adding storage power and processing to the network can generally result in better handling of ever enhancing database size. A more powerful system in compare, a centralised DBMS, would need changes in both the software and hardware with increasing size and more powerful DBMS to be procured.
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest lev
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Explain the conventions for displaying an ER schema as an ER diagram? An E-R Diagram scheme might describe certain constraints to that the contents of a database must conform.
Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to
A full discription of the new, a discription of its components, and the bebefit it will provide a company. A disscussion of the information usedin the system. A disscussion of any
Give Concurrent sub states diagram for the classroom and exam held. In Figure, simultaneous substrates have been taken. After passing Minor 1 test you could give Minor 2 test. T
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What are partial, alternate,, artificial, compound and natural key? Partial Key: It is a set of attributes that can uniquely recognize weak entities and that are related to s
Ancestry database records information about family trees . Following information is recorded about each person: FIRSTNAME first name SURNAME surname MNAME maiden name (if
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
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