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Explain the term- Data Flows
Data Flows: A data flow connects output of an object or process to input of another process or object. It represents an in-between data value within a computation. Data flow states direction of flow of data from the source objects to destination object.
(a) Explain the three types of potential mistake which could occur if concurrency control is not properly enforced in the database system. Support your answer with appropriate ex
Explain the EXEC statement in SQL Ans: All statements which start with EXEC SQL are embedded SQL database statements. High level languages such as C can be employed to write a
What is the max. no. Of structures that can be included in a table or structure. Nine.
I need some help with my normalization database homework.
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
explain the mapping constraints
What is aggregate function? Briefly describe it? Aggregate functions are functions that take a collection of values as input and return a one value. SQL offers 5 built-in aggre
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
write short note on mobile database
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