Verify the table-cardinality estimates based on a selectivity estimate

Unit test for Predicate.filter()

Unit test for Filter.getNext() using a < predicate that filters everything

Unit test for Filter.getNext() using an = predicate

Unit test for Filter.getNext() using an = predicate passing no tuples

Unit test for Filter.getNext() using a < predicate that filters some tuples

Unit test for JoinPredicate.filter()

Return a view of this page before it was modified -- used by recovery @throws Exception

Provide a representation of this page before any modifications were made to it. Used by recovery.

Unit test for Catalog.getDbFile()

Unit test for HeapFile.getId()

Unit test for HeapPage.getId()

Unit test for Insert.getNext(), inserting elements into an empty file

Unit test for HeapPage.getNumEmptySlots()

Interface to access operations by a string containing an integer index for command-line convenience. @param s a string containing a valid integer Op

Unit test for TupleDesc.getSize()

Unit test for HeapPage.getSlot()

Unit test for HeapPageId.getTableId()

Unit test for Catalog.getTableId()

Return the id of the table with a specified name, @throws NoSuchElementException if the table doesn't exist

Given a table alias, return id of the table object (this id can be supplied to {@link Catalog#getDbFile(int)}). Aliases are added as base tabl

@return a Tuple with a 'width' IntFields with the value tupledata[i] in each field. do not set it's RecordId, hence do not distinguish

Unit test for Aggregate.getTupleDesc()

Unit test for Insert.getTupleDesc()

Unit test for Catalog.getTupleDesc()

Unit test for Filter.getTupleDesc()

Unit test for Join.getTupleDesc()

Unit test for HeapFile.getTupleDesc()

Unit test for Tuple.getTupleDesc()

Returns the TupleDesc of the table stored in this DbFile. @return TupleDesc of this DbFile.

Returns the tuple descriptor (schema) of the specified table @param tableid The id of the table, as specified by the DbFile.getId() function passe

Returns the TupleDesc with field names from the underlying HeapFile, prefixed with the tableAlias string from the constructor. @return the TupleDesc w

Returns the TupleDesc associated with this DbIterator.

Unit test for TupleDesc.getType()

@return the Type for this Field

Return the Type of this field. @return Type.INT_TYPE

Unit test for Join.getNext() using a > predicate

Unit test for RecordId.hashCode()

@return true if the iterator has more items.

@return a hash code for this page, represented by the concatenation of the table number and the page number (needed if a PageId is used as a key i

@return a hash code for this page, represented by the concatenation of the table number and the page number (needed if a PageId is used as a key i

You should implement the hashCode() so that two equal RecordId instances (with respect to equals()) have the same hashCode(). @return An int that is t

Return true if the specified transaction has a lock on the specified page

Create a DbIterator over group aggregate results. @see simpledb.TupleIterator for a possible helper

Unit test for BufferPool.getPage() assuming locking. Attempt lock upgrade.

Write an UPDATE record to disk for the specified tid and page (with provided before and after images.) @param tid The transact

Unit test for Aggregate.getNext() using a max aggregate

Test IntAggregator.merge() and iterator() over an avg

Test String.merge() and iterator() over a COUNT

Test IntAggregator.merge() and iterator() over a max

Test IntAggregator.merge() and iterator() over a min

Test IntAggregator.merge() and iterator() over a sum

Unit test for Aggregate.getNext() using a min aggregate

Unit test for Tuple.getField() and Tuple.setField()

Unit test for Tuple.getRecordId() and Tuple.setRecordId()

Unit test for TupleDesc.nameToId()

Test with a minimum and a maximum that are both negative numbers.

Gets the next tuple from the operator (typically implementing by reading from a child operator or an access method). @return The next tuple in the it

Test a join ordering with an inequality, to make sure the inequality gets put as the innermost join

Unit test for HeapFile.numPages()

Make sure that equality binning does something reasonable.

Make sure that GREATER_THAN_OR_EQ binning does something reasonable.

Make sure that GREATER_THAN binning does something reasonable.

Make sure that LESS_THAN_OR_EQ binning does something reasonable.

Make sure that LESS_THAN binning does something reasonable.

Make sure that equality binning does something reasonable.