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What is SQL, and why is it important?
SQL stands for Structured Query Language, and is the most significant data processing language in use today. It is not a complete programming language like Java or C#, but a data sublanguage used for creating and processing database data and metadata.
All DBMS products today use SQL.
difference between internal schema and external schema in DBMS
Advantages of Observation Methods: Bailey has pointed out four advantages of observation: 1. Superior in Data Collection on Non Verbal Behavior: When a person a opi
Describe different steps of the object-oriented design process. The broad steps of the object-oriented design process are: a. Define context and modes of use of the system
Text Processing: Use readLines to read SOU.txt into R. Create a vector called Pres containing the names of the presidents giving each speech. To do this, rst identify the lin
Explain Foreign Key? Foreign Key - Let there are two relations (tables) R and S. Any candidate key of the relation R that is referred within the relation S is known as the fo
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
what is Storage-Device Hierarchy question
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
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
What is it ?
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