Returns a new set with only the values that appear in both self and ssource.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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251e
def intersection (self, source):
252e
253
254
Efficiency:
255
Returns a new set with only the values that appear in both
self and source.
256
257
258
Maximum size of target Set is the smaller of the maximum sizes of
259
self and source.
260
Use: target
= self.intersection(source)
261
262
Parameters:
263
source - a set (Set)
264
Returns:
265
target - a set containing one copy of all the values
that appear in both self and source (Set)
266
267
268
Examples:
(1,2,3) intersection (3,2,1) is (1,2,3)
(1,2,3) intersection (4,5,6) is ()
(1,2,3,4,5,6) intersection (0,2,4,6,8) is (2,4,6)
269
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271
272
273
274
Transcribed Image Text:251e def intersection (self, source): 252e 253 254 Efficiency: 255 Returns a new set with only the values that appear in both self and source. 256 257 258 Maximum size of target Set is the smaller of the maximum sizes of 259 self and source. 260 Use: target = self.intersection(source) 261 262 Parameters: 263 source - a set (Set) 264 Returns: 265 target - a set containing one copy of all the values that appear in both self and source (Set) 266 267 268 Examples: (1,2,3) intersection (3,2,1) is (1,2,3) (1,2,3) intersection (4,5,6) is () (1,2,3,4,5,6) intersection (0,2,4,6,8) is (2,4,6) 269 270 271 272 273 274
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