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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.
What is object containment? References among objects can be used to model dissimilar real-world concepts.
What is known as sequential file organization? In the sequential file organization, the records are kept in sequential order, according to the value of a "search key" of every
A field-groups statement or an insert statement reverses storage space and transfers values. False.
PRINCIPLES OF DATABASE 1. State the following terms: a) Database b) Database Management System c) Entity d) Attribute e) Relationship 2. Discuss the Three Level Architecture
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
what is the relationship between receipt and owner entities in computer sales and service company
What are the several forms of identity? a) Value b) Name c) Built-in
What is conceptual model ? A conceptual model is a independent of both hardware and software.
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