please answer these 5 questions attentively Thanks 15 A wor

please answer these 5 questions attentively .
Thanks

15. A workgroup database is a(n) database. a. single-user c- enterprise b, user d. distributed 16. A desktop database is a databas a. single-user c. workgroup b. multiuser d, distributed 17. Most decision support data are based on historical data obtained from a, operational databases c. enterprise databases data warehouses d. workgroup databases 18. The structure is quite different from that of an operational or transactional database. a. data warehouse c. enterprise database b. workgroup database d. distributed database data exist in the format in which they were collected. c. Unstructured a. Structured d. Historical b. Semistructured 20, data exist in a format that does not lend itself to processing that yields information. c, Unstructured a. Structured d. Historical b, Semistructured I. Describe and name the five types of users identified in a database system. (20 points)

Solution

15)Workgroup database is multi user database

Explanation:Workgroup initially started as single user database but afterwords it is used in companies for multi user

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16)Desktop database is single user database

Explanation:Desktop database is locally stored hence it is single user

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17)Most decision support data are based on historical data are obtained from data warehouses.

Explanation:Historical data stored in data warehouses used for analysis

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19)Unstructured data exist in format in which they collected

Expanation:Unprocessed data is also called as Unstructured data because they are shown directly no operations are done