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Explain data dictonary on oracle ?
Data Dictionary - Data dictionaries are the system tables in which contain descriptions of the database objects and how they are structured.
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Distributed Control and Data sharing: The geographical distribution of an organization can be showed in the distribution of the data; if a number of different sites are linked to e
what is object-identity
Explain weak and strong entity sets? Weak and Strong entity sets: A physically powerful entity set has a primary key. All tuples in the group are distinguishable through that k
What is ODBC ? ODBC - Open DataBase Connectivity which is also denoted by ODBC enable the integration of SQL along with a common-purpose programming language. ODBC expose data
What are the two statements regarding transaction? The two statements regarding transaction of the form are:- A) Begin transaction B) End transaction
What is meant by object identifiers? Object-oriented systems use an object identifier to recognize objects. Object identifiers are unique: that is every object has a single ide
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
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