Back in December 2011, I just completed a 12-week evening course COMP 1630 at BCIT in downtown Vancouver. This was a great course worth 5 credits, and delved into database design, architecture, a little systems analysis, and a lot of SQL syntax. We learned about Crow’s Foot Notation in building an initial requirements design before translating that into actual tables, columns, indices, contraints, etc. It helped strengthen what I already knew of database systems and look forward to taking database administrator-type courses this year.
This dreaded flashing question mark inside a folder means that the startup disk is no longer able to find a Mac operating system to boot from. There are a few things you can try to do to fix this yourself. Reboot MacBook pro and then hold the Command (⌘) and R keys on your keyboard to startup from the macOS Recovery. I did this and was able to go through disk diagnostics telling me that there were some disk errors. I proceeded to fix what I could but found that on subsequent reboots to macOS Recovery showed different partition errors. Sometimes the disk utility completed successfully but other times it would stop repairing even if left overnight. If you did have a failing disk drive, the marked errors would be consistent and multiple passes will bypass these marked errors. I had erratic results however which led me to believe it may or may not be a bad disk. The next investigation should be to look at the disk drive connections to the SATA controller. Open the MacBook pro