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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