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minibaseLab1

README.md

minibase Lab1

Goal: Implement the classes (Tuple, TupleDesc, Catalog)

(Field, IntField, StringField and Type is already implemented.)

Main Components of miniBase and Excercise(hw)

Database.java

  • a class that initializes static variables used by the database system.
  • There is nothing you need to implement here.

Tuple.java

  • a class that maintains information about the contents of a tuple.
  • Tuple is a collection of Field objects.

TupleDesc.java

  • TupleDesc describes the schema of a tuple.
  • TupleDesc consists of a collection of Type objects

> Implementet the skeleton methods (except methods related to recordID)

  • src/java/minibase/TupleDesc.java
  • src/java/minibase/Tuple.java

If successfully implemented TupleTest and TupleDescTest unit tests should be passed.

$ ant runtest -Dtest=TupleTest
$ ant runtest -Dtest=TupleDescTest

Catalog

  • a class that keeps track of all available tables in the database and their associated schemas.
  • need to support the ability to add a new table + get information about a particular talble.

> Implement the skeleton methods in:

  • src/java/minibase/Catalog.java

If successfully implemented CatalogTest unit tests should be passed

$ ant runtest -Dtest=CatalogTest

Implementation Guide.

Recommeneded Implementation order

  1. TupledDesc.java
  2. Tuple.java
  3. Catalog.java

Fill out methods where TODO is marked. (You don't need to implement iterator right now).

Search java methods if you need. For example in Tuple.java we manage fieldVal using data structure List there are in-built methods you can use. reference

Submission

  • Submit on icampus after making tarball
$ ant hadin

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Good Luck!