welcome to the rice fields mf

Videoscribe

yes u can. but what do u mean by imaginary table?

@@notyournormalbrother What I mean is when we select 2-3 same tables but differentiate it with alias .For example SELECT employees e JOIN employees m .... JOIN employees l ..

@@ikmalasraf8850 there is no imaginary table. All are tables inside the database. Oracle just treat them differently because you gv it different names because they are all the same tables.

weak relationship - bila ada connection between strong and strong entities. (putus-putus) strong relationship - bila ada connection between strong entity with weak entity (solid line) strong entity - can exist on its own weak entity - need strong entity to exist (contoh, bridge entity)

iPad Pro + Apple pencil with Microsoft whiteboard

For animation, videoscribe + easy sketch

Hi. I use few software. Easy sketch and videoscribe

For drawing, i use ipad pro + apple pencil on Microsoft whiteboard

yup. soalan mmg normally kena lukis complete erd. You can check exercise playlist to see example of the question

notyournormalbrother thank you sir hamiz ☺️

courses ni refer to subjects yang dia ambil. contoh course: database. so, 1 subject many students, 1 student many subjects. 1 student boleh ambil banyak courses at the same time. contoh, satu semester kan student boleh ambil 5-6 courses kan. same goes, dalam satu semester, takkan sorang je ambil course database. ramai student ambil. So, maximum occurences utk student dengan course akan jadi, many students, many courses. Hence, kena ada bridge la in between students and courses.

Sorry, I dont get your question. But, read only table can be done with alter statement. You create the table as usual, insert all the data needed, then alter the table into read only status to make sure the table cannot be updated or deleted. But, if you want the user has read only on the system, you need to handle it at your coding. For visitor of online forum, if you did not want to store their data, no need new entity. If you want to keep their details, they are not visitors, they have become user already.