To answer this question, you need to understand the role of a connection object in a database.
A connection object is used to establish a connection between a database and a program or application. It contains all the necessary information to connect to the database and perform operations on it.
Let's go through each option to understand why it is correct or incorrect:
Option A) Location - This option is incorrect because the connection object does not necessarily need to contain the location of the database. The location can be specified separately, such as in the connection string.
Option B) Type - This option is incorrect because the connection object does not need to explicitly specify the type of the database. The type of the database can be determined based on the database management system being used.
Option C) Query - This option is incorrect because the connection object is not used to store or execute queries. Queries are typically executed using other objects, such as statement objects.
Option D) All of the above - This option is correct because the connection object can contain the location, type, and other necessary information to establish a connection to the database. It may also include additional properties such as credentials, timeout settings, and more.
Therefore, the correct answer is D) All of the above.