Explain briefly the term an outer join
Explain briefly the term an outer join?
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An outer join comprises the records which those and match that do not have a matching value in any other table. Outer joins can be a LEFT outer join (or includes all records from the first table listed) or a RIGHT outer joins (or includes all records from the second table listed). Outer joins are not easily employed with more than the two tables.
State the different advantages of the data warehousing?
State the benefits of the Business Objects over the other DSS?
What is meant by the term merge?
Name the main data structures used in these areas: Hierarchical data model, RDBMS and Network data model?
Briefly explains the three kinds of SQL commands?
Illustrate the multi value or multicolumn problem? Include an example not employed in the text.
To implement the priority queue what is the minimum number of queues we need?
Write a brief note on a distributed database?
hatcher also created the accompanying Level 1 data flow diagram for this process. Unfortunately, this DFD has numerous syntax and semantic errors. Identify the errors. Redraw the DFD to more correctly represent the receive supplier shipments process.
State the steps for “this message could not delete” from the particular tables?
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