1. Write the relational algebra statement which will select all tuples from the PC table which have a hard drive (hd) of at least 300 gigabytes.

2. Display the table which is the answer to the relational algebra query of question 1.

The relation PC model speed ram hd price 1024 512 250 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 512 1024 512 1024 320 2.66 2.10 1.42 2.80 3.20 3.20 2.20 2.20 2.00 2.80 1.86 2.80 3.06 2114 995 478 649 630 1049 510 770 650 770 959 649 1024 200 2048 250 1024 250 2048 | 300 2048 160 1012 1024 160 80 1013 512 529