Figure Pr.41a – Illustration UsageVolume and Network Product : Object diagram
| Created: | 5/3/2022 12:56:01 PM |
| Modified: | 5/3/2022 12:57:46 PM |
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<font color="#29313b">Kat has bought a Mobile Line and a 2 hours National Voice Usage Volume.</font><br/><font color="#29313b">Her phone number is 0601010101.</font><br/><br/>