8.3 Entities

Here is the definition of an entity.

An entity represents a thing that has meaning in a given context and about which there is a need to record data.

A data model is not concerned with the individual entities. Instead, it describes particular types of entity. For example, all students are represented by the same types of data (student identifier, name, whether or not registere
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Felicia Marcus will describe California water's setting – its basic hydrology and infrastructure – then discuss the drought's impacts and the state's current actions to address them. She will also describe how California water management is changing to cope with the impacts of population growth, climate change and increasing conflicts between uses.

Felicia was appointed by Governor Jerry Brown to the State Water Resources Control Board for the State of California in 2012, and designate
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levine event posterA talk by journalist and author Steven LeVine. Pipeline politics became a modern day version of the 19th Century's Great Game, in which Britain and Russia had employed cunning and bluff to gain supremacy over the lands of the Caucasus and Central Asia. “The Oil and Glory” is the story of how, at the dawn of the 21st century, the game was played once more across the harsh e
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2.5 Other aspects of writing

Now we will look at the way Philip and Hansa wrote and presented their essays. Did you find them both easy to read? As regards Philip's, my answer is, ‘yes and no’. It is sometimes easy because he has a fluent way with words. But it is often difficult because he does not use enough punctuation to help us make sense of his words, and because of certain mistakes he makes. I found Hansa's essay easier to read. Her writing is more technically correct and more assured than Philip's. But
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4 Exploring the explanations

At this point the emphasis of the discussion changes somewhat. We are going to use three case studies to illustrate some of the problems and difficulties that parents can face in their day-to-day lives. After reviewing the case studies you will be asked to reflect on some possible reasons and explanations for the situations outlined.


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