Which of the following is an automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security?A) Relationship dictionaryB) Entity-relationship diagramC) Data dictionaryD) Data definition diagramE) Referential integrity module

A Data Dictionary is a collection of names attuites and definitions that tell about the data and its elements.  

It may include the documents describing the database, and integrated component of DBMS and is a piece of middle ware.It is used to capture and store the database information. It can be used as a part of the research project.Hence the option C is correct.

Learn more about the automated or manual file that stores information.

link.

Option (C) is the correct answer of this question.

Explanation:

Data Dictionary is an artificial or manual file that stores data product information and data aspects such as use, physical representation, ownership, authorisation, and protection.A Data dictionary is a hierarchical information repository. Metadata represents data.

The database dictionary includes records of other information objects, such as data custody, data partnerships with other entities, and other documents. A vital component of any database engine is the Data dictionary.

Other options are incorrect because they are not follow the given scenario.

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.

Answeran electronic notebook;