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CSE 880, Fall 2014
Advanced Database Systems
Homework 7: Object Relational Implementation
Due: 11/24/2014
This homework has to be implemented using Oracleplus
Implement the following in oracle object-relational.
1. (20 Points) Following problem is on inheritance in Oracle object relational database.
(a) Create the following three types in Oracle object-relational database.
These types correspond to the entity sets given in the EER diagram of the sports database of homework 1.
Employee-type(Eno, Ename, Eaddress)
Player-type(PlayingPosition)
InternationalPlayer-type(country)
Assume that Employee-type is NOT INSTANTIABLE (note that
a method can also be defined as NOT INSTANTIABLE where
only interface of the method is defined with the type definition and
the implementations of the method are created in the subtypes).
Assume that InternationalPlayer-type is a subtype of Player-type.
Do not forget to include NOT FINAL in Employee-type and
Player-type.
(b) Create a table Players of Player-type. Insert into this table
two tuples of type Player-type and another two tuples of type
InternationalPlayer-type.
(c) Do the following query on the table Players:
i. Select tuples of InternationalPlayer-type with only attributes
of its super types.
ii. Select tuples of InternationalPlayer-type with all of its attributes.
iii. Select the attribute name and the country of the tuples of
InternationalPlayer-type.
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iv. Retrieve all rows of Players table as one column of object type
player-type
v. Retrieve all rows of Players table as a non-object-relational
multi-column (each attribute is a column) table.
2. (10 points) Object-relational schema in Oracle of some of the entity
and relationship types of the sports-database (EER diagram posted)
is given. You will need to complete this schema for the EER diagram
posted.
3. Design and implement a query which uses REFs to go accross tables
instead of joins to navigate across tables.
4. (20 Points) Two member functions (getWinner, getMaxScore) are needed
to implement the following SQL queries. The member function getWinner and the interface to getMaxScore member function are given in
object-relational schema file. You need to implement the getMaxScore member function.
5. (30 points) Implement the following SQL queries:
(a) Get the names of those teams which have players with address
’East Lansing’
(b) Get the name of each game and the players who have scored the
highest in that game.
(c) Get all the teams in League A who have not won any games.
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