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Showing results for tags 'database design'.
I'm having difficulties understanding how a intermediary table works. The example on page 168 makes sense and is simple to understand (the books and authors example), but when I tried to apply it to my design it didn't work out. This is my intended design: I have a 'users' table. Each user has a course/s that he's taking, 'course_id.' The name of the course is in the 'courses' table, and the intermediary table is 'users_courses.' I want to extract the 'user_id' together with the 'course_name.' users: user_id (pk) users_courses: user_id (pk) course_id courses: course_id (pk) c
HI, Hope someone can clarify for me. I'm refering to the examples used in Chapeter 6 regarding the movie database. I have to build a database very similar. Currently all the data is stored in an excel spreadsheet. I have one column for actors (multiple values each cell) which contains all the actors names (groan not separated by last and first names), and the names are sperated by pipes. I also have a director column (1 value each cell), studio column (1 value each cell) and genre (multiple values each cell) column which also uses pipes as a separator. I realize that I have to cre
Hi, I'm really enjoying working through this book; I'm currently on Chapter 7. However, I have a question about database normalization from Chapter 6. I want to create a database of musical chords; for simplicity's sake, I'm limiting the chord types to the four basic triads and their inversions for now. The different types of data I'm including are the letter name (C, Db, F#, etc), the chord quality (Major, minor, Augmented and diminished), and the inversion (root position, 1st inversion and 2nd inversion). So my database would look something like this: C Major Root Position C Major 1