Data Representation Types: 10 practice questions

Question 1 of 10

What must be true of every instance in a structured dataset?

1. AFiles have no specific structure shared across their contents.
2. BEvery instance follows the same fixed schema of fields or properties.
3. CEach instance freely changes both its organization and its properties.
4. DInstances retain some organization but can carry different fields.

Question 2 of 10

Customer records share an overall organization, but some have multiple email addresses and others have none. Which representation type fits?

1. AStructured data with one fixed schema and identical properties in every instance
2. BSemi-structured data with permitted instance-level variation
3. CUnstructured data without a recurring organization
4. DStructured tabular data with identical fields in every row

Question 3 of 10

Which representation type can include native documents, images, audio, video, and binary files?

1. AUnstructured data with no specific shared structure
2. BStructured tabular data with rows and attribute columns
3. CStructured data with a fixed schema across instances
4. DSemi-structured data with varying fields inside recurring organization

Question 4 of 10

In the most common tabular schema for structured data, what do rows and columns represent?

1. ARows represent schemas, and columns represent unrelated binary files.
2. BRows represent entity instances, and columns represent entity attributes.
3. CRows represent key values, and columns represent complete entity tables.
4. DRows represent attributes, and columns represent separate data stores for each entity.

Question 5 of 10

Two JSON customer documents contain address and contact sections, but their specific fields differ. How should this representation be classified?

1. AStructured, because JSON requires identical properties in every document
2. BSemi-structured, because it has organization while allowing fields to vary
3. CUnstructured, because JSON documents cannot contain recognizable organization
4. DStructured, because differing fields satisfy a single fixed tabular schema

Question 6 of 10

What distinguishes native media and binary documents from a fixed-schema customer table?

1. AThe files use tabular rows, while the table stores only audio and video
2. BThe files require identical attribute columns, while table instances can omit any field
3. CThe files can lack a specific structure, while table instances share fixed fields
4. DThe files share a fixed schema, while the table has no recurring organization

Question 7 of 10

Which change introduces the defining semi-structured feature into records that previously shared one fixed schema?

1. AAllowing individual records to omit or repeat selected fields while retaining organization
2. BReplacing the records with native media files that have no recurring organization
3. CKeeping identical fields for every record and continuing to use the same schema
4. DPlacing every entity instance in a row with attributes in fixed columns

Question 8 of 10

A customer export preserves address and contact sections. Some addresses include a unit field, and contact collections contain either one email or both phone and email entries. Which classification fits the records?

1. AStructured, because the shared sections guarantee identical fields in every record
2. BUnstructured, because any optional field removes all organization from the records
3. CSemi-structured, because organized records permit fields and value counts to vary
4. DStructured, because contact collections require one fixed tabular schema

Question 9 of 10

A sales system requires every product instance to have the same properties. It places each product in one row, each attribute in a column, and uses key values to reference related tables. Which classification fits?

1. AUnstructured, because key references prevent the data from having a specific structure
2. BStructured, because all instances share a fixed tabular schema
3. CSemi-structured, because columns allow attributes to appear or disappear by row
4. DSemi-structured, because related tables permit each product to use different fields

Question 10 of 10

An archive must retain native images, audio recordings, videos, and application-specific binary documents. The files do not share a schema of recurring fields or properties. Which classification fits the archived content?

1. AStructured, because each document supplies the same entity attributes
2. BUnstructured, because the native files have no shared specific structure
3. CSemi-structured, because all media files contain varying address sections
4. DStructured, because every binary file follows one common table schema