Hemant's Blogs
Friday, September 23, 2016
Basic Mapping: The Transformation Process
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Cheatsheet Common for table and column: · start with letter, · up to 30 alphanumeric · no space or spec...
Introduction to Relational Database Concepts
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· A constraint which ensures that the column contains no null values and uniquely identifies each row of the table. – Primary K...
Drawing Conventions for Readability
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· Space on a page or poster not covered by print or graphic matter. – white space · An entity that will have a large ...
Modeling Change: Price
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· Keeping an on-going record of transactions. – Journaling and/or Logging · A rise in value or price, especially over...
Modeling Change: Time
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· A constraint or data restriction that results from the time dimension. - Time-related Constraint · Refers to a rela...
Modeling Historical Data
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1. In the scenario below, what words or phrases indicate to you the need to track data that changes over time? Actors at the local thea...
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