Operational data stores (ods) are not: interim staging area for the data warehouse especially for customer information files (cif). data are updated frequently through the course of business operations as opposed to the static contents of a data warehouse. (short-term memory)

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You need to call the office. and then you need to give them a reason on why you want to change your username.

Reddit is  an american  social news  sharing service, web content  rating, and  discussion  website.  the name "reddit" is a  play-on-words  with the phrase "read it",  when items (links or text posts) are submitted to a subreddit, the users, called "redditors",  can vote for or against these links or posts (upvote/downvote). 

Ocr stands for optical character recognition. so the choice is straight forward.