09 Jul DISCUSS THE HAPPY CRUISE LINES RELATIONAL DATABASE
MINICASES 1.Discuss the Happy Cruise Lines relational database in Minicase 5.1.The company has decided to reconfigure this database as a distributed database among its major locations: New York, which is its headquarters, and its other major U.S. ports, Miami, Los Angeles, and Houston. Distributed and replicated among these four locations, the tables have the following characteristics:
SHIP consists of 20 records and is used in all four cities. CRUISE consists of 4,000 records. CRUISE records are used most heavily in the cities from which the cruise described in the record began. PORT consists of 42 records. The records that describe Atlantic Ocean ports are used most heavily in New York and Miami. The records that describe Caribbean Sea ports are used most heavily in Houston and Miami. The records that describe Pacific Ocean ports are usedmost heavily in Los Angeles. VISIT consists of 15,000 records and is primarily used in New York and Los Angeles. PASSENGER consists of 230,000 records and is primarily used in New York and Los Angeles. VOYAGE consists of 720,000 records and is used in all four cities. Design a distributed relational database for Happy Cruise Lines. Justify your placement, replication, and partitioning of the tables.
2. Consider the Super Baseball League relational database in Minicase 5.2. The league has decided to organize its database as a distributed database with replicated tables. The nodes on the distributed database will be Chicago (the league’s headquarters), Atlanta, San Francisco (where the league personnel office is located), and Dallas. The tables have the following characteristics: TEAM consists of 20 records and is located in Chicago and Atlanta.
COACH consists of 85 records and is located in San Francisco and Dallas. WORKEXP consists of 20,000 records and is located in San Francisco and Dallas. BATS consists of 800,000 records and is located in Chicago and Atlanta. PLAYER consists of 100,000 records and is located in San Francisco and Atlanta. AFFILIATION consists of 20,000 records and is located in Chicago and San Francisco. STADIUM consists of 20 records and is located only in Chicago. Assume that telecommunications costs among the cities are all about the same. Develop and justify a plan for solving the following queries: a. A query is issued from Chicago to get a list of all the work experience of all the coaches on the Dodgers. b. A query is issued from Atlanta to get a list of the names of the coaches who work for the team based at Smith Memorial Stadium. c. A query is issued from Dallas to find the names of all the players who have compiled a batting average of at least. 300 while playing on the Dodgers
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