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Retrieve the S&S In-Chapter Database (in Microsoft Access format) from the text's Web site (or create the tables in Table 4-5 in a relational DBMS product). Write queries to answer the following questions. Note: For some questions, you may have to create two queries-one to calculate an invoice total and the second to answer the question asked.
* a. How many different kinds of inventory items does S&S sell?
* b. How many sales were made during October?
* c. What were total sales in October?
* d. What was the average amount of a sales transaction?
* e. Which salesperson made the largest sale?
* f. How many units of each product were sold?
* g. Which product was sold most frequently?
With the help of an example display how records can be deleted and updated in QBE. (i) Increase Pay_Rate of employees along with the skill of ‘cook' by 10%. (ii) Delete employee
State the Design of Associations Before designing associations, it is essential to know the way they are used. For this, analysis of association traversals is required. It is
What is object containment? References among objects can be used to model dissimilar real-world concepts.
write program
Give the forms of triggers? The triggering event can be insert or delete. For updated the trigger can state columns. The referencing old row as clause The referencing
What is Relational Algebra? Relational algebra is a Procedural query Language?
what is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?what is indexin
Critically evaluate the bulleted list of information-related items in this case study. How are each contradictory to the notion of being an information-literate knowledge worker?
explain the mapping constraints
Normalization :It is a process of examine the given relation schemas based on their primary key and Functional Dependencies (FDs) to achieve the properties Minimizing redun
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