Best relational database for IOS / Android

[doc hawk]

Rick remanded,

> Nice!

Not just nice, but necessary for consistency—if I have a variable change which also causes two more to change, it is absolutely critical that either all three change, or that the whole thing fail.  You just can’t do that without begin/end, AFAIK, unless you have a followup that checks all three once all are done—and what if you lose power or otherwise crash before that happens?