Determine better format for the data

[theovoss]

I'm thinking that once we start trying to answer more complicated questions we won't want to be reading all the data every time. For example if I want a graph to compare parking during the week of Christmas with parking during the week of thanksgiving and I want it for every year we have data for we don't want to have to load in all the data again.

I'm thinking a database of some sort would be better than csv files.

[theovoss]

@joshfriend suggests sqlalchemy

[theovoss]

More near term, we need to determine how good our data is and a database would make that easier.

For instance I want to know what lots have entry and exit times within 10 minutes of eachother, and which lots are missing entry or exit time.