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Which database object does not physically exist?
A view database object does not physically exist.
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
Differentiate between horizontal & mixed horizontal fragmentation?
The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
What is a query tree? Ans: A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
Normalize the following tables upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
Meaningful use refers to the use of certified EHR technology to "enhance quality, efficiency, and reduce health disparities
In which format database schema is written ? Data base schema is written in the DDL format.
Scenario 1: Power goes out after the first instruction. What happens?
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