The Discipline of Organizing: Professional Edition, 4th Edition

Self-Review

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9.5. Key Points in Chapter Nine

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What are two perspectives on forming resource descriptions?

We can approach the problem of how to form resource descriptions from two perspectives: structuring and writing.

(See §9.1, “Introduction”)

Are metamodels domain-specific?

Metamodels describe structures commonly found in resource descriptions and other information resources, regardless of the specific domain.

(See §9.2, “Structuring Descriptions”)

What do blobs, sets, lists, dictionaries, trees, and graphs have in common?

Blobs, sets, lists, dictionaries, trees, and graphs are all kinds of structures that can be used to form resource descriptions.

(See §9.2.1, “Kinds of Structures”)

What is a list?

A list, like a set, is a collection of items with an additional constraint: their items are ordered.

(See §9.2.1.3, “Lists”)

What is a dictionary?

A dictionary, also known as a map or an associative array, is a set of property-value pairs or entries.

(See §9.2.1.4, “Dictionaries”)

What is a nested dictionary?

Nested dictionaries form a tree.

(See §9.2.1.4, “Dictionaries”)

What is a tree?

Trees consist of nodes joined by edges.

(See §9.2.1.5, “Trees”)

What are the two kinds of data structures used by JSON?

JSON consists of two kinds of structures: lists (called arrays in JavaScript) ...