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Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i)
CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dependent WHERE employee.e_no = dependant.e_no GROUP BY e_name;
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Reflects organisational structure: Many organizations are distributed over various locations. If an organisation has many offices in dissimilar cities, databases used in such an ap
Waterfall model is the linear model. The process is completed by step by step. We couldn't stop in between of the process. Prototype model: after get the model by low cost budget o
#questiononsider the following relation: CAR_SALE =(CAR_ID,oPTION_TYPE, Option_listpreice, Sale_date, Option_discountedprice)..
Define a relation ? Relation - A relations is a named two-dimensional table of data. Mathematically, a relation can be described as a subset of the cartesian product of a lis
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
Submit the SQL Statements necessary to create your database according to the following guidelines: Your SQL statements should exactly mirror your ERD. All primary keys,
Information about a bank is about customers and their account. Customer has a name, address that consists of house number, area and city, and one or more phone numbers. Account ha
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Use again the GE Flight Quest Data and build on the work done for homework 1 and 2. The goal is to create a classification model which classifies flights into "on-time" (you can de
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