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To delete a particular column in a relation which command is used ?
To delete a particular column in a relation ALTER command is used.
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
What is Gathering information and Producing ERD Gathering information: This could be a written document that explains the system in question with reasonable quantity of detai
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Create a Student database and Retrieve the names of all students majoring in ‘CS' Consider the following relational database: STUDENT (name, student#, class, major) COURSE (co
What is serialization? Where it is used and why? Serialization is a basic term used for mechanisms which enable objects and object structures to be converted into portable for
Discuss along with examples about several types of attributes present in the ER model? Types of Attributes are: • SIMPLE attributes are attributes which are drawn from the ato
Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
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