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Which database level is closest to the users?
External database level is closest to the users.
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
Security: Data not needed by local applications is not stored at the site, therefore no unnecessary security violations may exist. But how can we carry out fragmentation? Fragm
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
Consider the E/R schema with weak entity sets shown below. Come up with the SQL CREATE TABLE statements (with appropriate primary key, unique and foreign key constraints). Include
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da
State as Location within a Program In this traditional approach, location of control inside a program totally defines the program state. Any finite state machine may be implem
wh
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
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