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Explain the differences between structured data and unstructured data.
Structured data are facts concerning objects and events. The most significant structured data are numeric, character, and dates. Structured data are kept in tabular form. Unstructured data are multimedia data like documents, photographs, maps, images, sound, and video clips. Unstructured data are most usually found on Web servers and Web-enabled databases.
Use a Set operator to create a list of academics who have written or co-written less than 5 papers and also have greater than 3 interests. List their academic number in the output.
Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i) CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dep
What are the features of embedded SQL? Explain. Embedded SQL - SQL could be implemented within two ways. It can be used interactively or embedded in a host language or throu
what problems are raised by the database? why is it so controversial? why is data quality an issue?
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.
Normal 0 false false false EN-US X-NONE X-NONE
Example : Create a sequence named SEQSS that starts at 105, has a step of 1 and can take maximum value as 2000. CREATE SEQUENCE SEQSS START WITH 105 INCREMENT BY 1 MAX VA
What are the different approaches for database design? There are two basic approaches for database design which are as follows: Attribute driven: It compiles a list of att
how to operate database in access ?
Define a view and a trigger. Construct a view for the above relations that have the information about suppliers and the elements they supply. The view holds the S#, SNAME, P# , PNA
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