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cezarovidiu

Entity Attribute Value in Magento - Magento tutorial lesson 19 - Magento - 0 views

blog.magestore.com/...ity-attribute-value-in-magento

eav magento database schema

shared by cezarovidiu on 19 Feb 14 - No Cached
  • Entity Attribute Value
  • number of attributes (properties and parameters) which can be used to describe them are potentially vast, but the number of attributes which will actually apply to a given entity are relatively modest.
  • sparse matrix
  • ...11 more annotations...
  • vertical database
  • open schema
  • more complex queries
  • Entity: The entity represents Magento data items
  • Attribute: The attributes represent data items that belong to an entity.
  • Value: The value is the simplest to understand as it is simply a value linked to an attribute
  • 1.1. What is Entity Attribute Value
  • 1.2. Entity table structure
  • At the very least, the attribute definitions table would contain the following columns: an attribute ID, attribute name, description, data type, and columns assisting input validation, e.g., maximum string length and regular expression, set of permissible values, etc.
  • The attribute or parameter:
  • The entity
cezarovidiu

Building Dynamic Actions in Oracle Application Express 4.1 - 0 views

www.oracle.com/...dynactions.htm

apex obe action links

shared by cezarovidiu on 13 Nov 13 - No Cached
  • cezarovidiu on 13 Nov 13
     
    "select d.loc location, count(e.empno) num_employees from dept d, emp e where d.deptno = e.deptno(+) and d.deptno = :P3_DEPTNO group by d.loc"
cezarovidiu

Intro to R - YouTube - 0 views

www.youtube.com/playlist

r tutorial

shared by cezarovidiu on 25 Mar 14 - No Cached
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