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The hierarchical model is a restricted type of network model. Again, data is represented as collections of records and relationships are represented by sets. However, the hierarchical model allows a node to have only one parent. A hierarchical model can be represented as a tree graph, with records appearing as nodes (also called segments) and sets as edges.
Transcription
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My boner
The schwa vowel sound in "banana" is the unstressed "uh" sound in the second and third syllables. It is represented by the symbol /ə/ in phonetic transcription.
Ball-and-Stick Model
bankers -Sullivan North High
station model
Zero
Transcription
A calotte model is a space-filling model - a three-dimensional molecular model where the atoms are represented by spheres whose radii are proportional to the radii of the atoms.