When drawing ER diagrams, be obvious. Put a gap between double$-$lines. Draw subset symbols nice and large.

Consider a database containing information about power outages.

Create entities and relationships as appropriate for each $($independent$)$ situation described below. homework solution.$)$ "fudged" the truth a bit, on these questions, to make good homework questions. Draw the ER diagrams for the situations as described.$)$ is possible for an outage to affect no streets, and for a street to have no outages on it$.$ or none. An outage might have no repairs working on it$,$ or one, or many teams. $2pm,$ employee $33$ wrote, "cutting up fallen tree branch". The notes help the power company track the progress of an outage repair.$)$ timestamp. power station outage is never a brownout, and a brownout cannot be caused by a power station outage. $($Power station outages cause blackouts, severe ones.$)$ screws.$)$