In a new installation of Oracle Database 11g， you perform these activities：
1. Organize software and data on different subdirectories to avoid poor performance.
2. Use consistent naming conventions for database files.
3. Separate administrative information pertaining to the database in different directories. 
Which optioncorresponds to the type of activities you performed（）

You have two database servers SEMP and SACCT. The database in the SEMP server maintains the employeeinformation and the database in the SACCT server maintains the accounts payable information. The employeessubmit the expense reports to the accounts payable department. A user of the accounts payable databasewants to extract the employee information from the database in the SEMP server for cross-verification. 
Whichschema object enables the user to access the information from the remote database（）