Network and hierarchical database model
Contrast a network and hierarchical database model?
Expert
The hierarchical model is a top-down structure where each and every parent might have many children however each and every child can have only one parent. This model supports relationships one-to-one and one-to-many. The network model can be much more flexible than the hierarchical model because each and every parent can have multiple children however each and every child can also have many parents. This model supports relationships one-to-one, many-to-many, and one-to-many.
Define the term environment variables?
Another company used statistic in reports is the total number of orders placed by a shopper. Complete the following steps to create a function named NUM_PURCH_SF that accepts a shopper id and returns the total number of orders the shopper has placed. Use the function in a SELECT statement to display
What are some of the demerits related with conventional file processing systems?
What is meant by the Data Mining?
Does System development life cycle changes when you use Teradata in place of Oracle?
Explain some of the ETL Tools?
Explain and compare OBE and SQL?
Explain the hot backup in case of Oracle.
Explain the term Data mart?
Explain the difference between ARRAY and STACK in Data Structures?
18,76,764
1923782 Asked
3,689
Active Tutors
1438915
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!