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Q1) Write a SELECT statement that returns three columns:
InvoiceTotal From the Invoices table 10% 10% of the value of InvoiceTotal Plus 10% The value of InvoiceTotal plus 10% (For example, if InvoiceTotal is 100.0000, 10% is 10.0000, and Plus 10% is 110.0000.) Only return those rows with a balance due greater than 1000. Sort the result set by InvoiceTotal, with the largest invoice first.
Course: data mining. Require a 7 page essay on subjects: Warehouse Architectures: the paper requires to contain information about centralized, federated, and tiered data warehouse.
Several times, database triggers are utilized to record logins by users. Here is the example of login trigger that inserts row into table every time a user connects.
determine the functional dependencies that exist in the following table. After determining the functional dependencies, convert this table to an equivalent collection of tables.
Write down the complete transaction using SQL.
Create a Microsoft Access database. Create the tables, fi elds, data types, and primary key(s) for the database. Create the relationship(s) needed between the tables.
Explain what is the purpose of Database? The purpose of a database is to store information about certain types of objects. Give an example of two related TABLES.
What criteria would you use in selecting a life-cycle model for the project?
What actions does a referential integrity constraint prevent from occurring when data is inserted in a table that contains this constraint?
Design a work breakdown structure for the task below: Designing the database, Working on the website content
Use the three-sphere model for systems management and brainstorm issues related to the change based on the business, technology, and organization spheres.
Write a query that performs an inner join of the grade, student, and grade_type tables using ANSI SQL 99 syntax (JOIN ON).
Complete (i.e., reverse engineering) ER diagram below such that 4 relation schemas above are exactly result of a translation from the ERD to the relational model.
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