Do you have a Master to teach you analytics?
Searching for data is fun. Reminds me of doing puzzles, wich I'm a fan of.
Technology can be a real jungle. And if you're going to the jungle you need to be prepared. Get right tools with you. And food and water - finding your way can take a while.
Sometimes a wall in your office is not enough to model schema of your database.
Sometimes (often?) complexity of the system is caused by complexity of the domain. In this case, poor design makes bad situation worse.
Some databases have enormous number of tables - thousands and even tens of thousands.
Creating a diagram for many databases can be a real challenge. Including space required. Our solution - create a number of smaller diagrams.
Packaged applications have their own names for entities and attributes that may differ from the ones used in your organization. This may pose a challenge with reporting.
Can you always figure out what database table holds or sometimes you need a professional help?
Some databases can be overwhelming with hundreds and thousands of tables.
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