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ER Exercises - db4u
db4u Exercise ER-1 What is the cardinality and existence of each of the following relationships in just the direction given? State any assumptions you have to make. Husband to wife Exercise ER-2 For e...
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SQL Tutorials - db4u
db4u It's my belief that the best way to learn SQL is to use SQL. So that's what you're going to do. There are some very high quality interactive tutorial sites already on the Web. You should complet...
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Lectures - db4u
db4u Lecture 1 (Tues morning I) We're going to introduce the topic (i.e., databases), and then move on to normalization. We'll also do some exercises. We're going to learn a bit of SQL by using the in...
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Normalization Exercises - db4u
db4u Question P.1 Using the graphical method, draw the 1NF relation given the receipt shown in [functional-basics.php#ex-form-videos this figure (Moore Videos in problem 10 in section 2.3)]. Next, dra...
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From ER diagrams to SQL tables - db4u
db4u From ER diagrams to SQL tables The purpose of this set of pages is to come up with a set of rules for translating from ER diagrams to table d...
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One (optional) to Many - db4u
db4u Bs. For any A. (Equivalently, there may be one A). Consider the alternatives of embedding a column from one table in the other table: embedding b_id in the b_ids in B entity with a particula...