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explain ANSI SPARC architecture
Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a
Differentiate between join and outer join? Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get toge
What are the ways in which the variable-length records arise in database systems? Storage of many record types in a file. Record types that permit variable lengths for one o
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
How to reduce data redundency
lock and types of lock
Explain Data Dictionary in short?
Which is the properties of entities? Attributes is the properties of entities.
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