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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?
Create Relational Database Model (RDM) for Sailing bed and breakfast club Table_Name( attribute_1, attribute_2, attribute_3, ? ,attribute_x) Primary Key ( attribute_1, attribute_2)
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
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multiplicity constarin
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
What is meant by normalization of data? It is a process of examining the given relation schemas based on their Functional Dependencies (FDs) and primary key to achieve the prop
what is er digram given that example of hospital,bank and library er digram.
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