Database Systems

CS-377: Spring 2004

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Relational Design and Database Creation

RELATIONAL DESIGN MILESTONE:

Deadline: Friday, March 26th, in class, turn in your project notebook

After the proposal divider:

bulletany revised proposal, if required, clearly marked with a Last modified: date,
bulletyour original proposal, including my comments and annotations, along with all prior proposals with annotations.

After the model divider:

bulletyour revised model, if required, clearly marked with a Last modified: date,
bulletyour original model, including my comments and annotations.

        Make sure that your latest model included here corresponds with the design given in the next section! This does not mean that you cram intersection tables, tables due to multi-valued attributes, and other tables resulting from normalization into the model --- tables do not belong in your model, only entities/objects! It does mean that if you decide to change the cardinality of a relationship between entities/objects, or if you remove or add an entity/object while doing the design, that you modify the model to reflect that. 

After the (newly created and inserted) design divider

bulletRecall that each logical item in the design section should have a last modified date.
bulletAn annotated enumeration of functional dependencies (the set F) for your full database design.  Each FD should be accompanied by a short rationalization as to why (with respect to the real-world enterprise) this functional dependency should hold.  Note that I want you to cover everything that should hold, but I do not need the closure of F, nor do I necessarily want the canonical cover for F, as I would rather have FD's that "make sense" relative to the real-world enterprise.
bulletNext, give me the set of relational schema derived from your E-R model of the database.  Each schema definition should clearly indicate the name of the schema, the set of attributes, along with brief descriptions of the attributes, the data types of the attributes and, if the set of acceptable values comes from a more limited set than the data type allows, an enumeration or precise specification of that set, and the primary key.  Also please note if more than one candidate key exists for the relation.
bulletFor those relations where you will need to be performing joins to access data from other tables, indicate the foreign keys, that is, the non-primary key that is used in a join condition with the corresponding primary key from another relation.
bulletA print-out of a nicely formatted SQL script whose contents is the set of SQL create statements to realize your database design in Oracle.  Please make the file easy to read and use comments to describe each table and any attributes whose names do not make their use self-evident, and group relations together and relate them back to the E-R model from whence they came.  In practice, you will have a corresponding SQL script to drop the full set of tables from your database, so that you can iteratively refine your database schema creation.
bullet

PLEASE NOTE: insert statements do not belong with the database design. Please do not include them here.

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Last updated: 01/30/04.