I have a job interview tomorrow for a summer student position working with GIS. I will be mainly responsible for assisting in the acceptance, storage and dissemination of geographic information, amp datasets,and associated metadata. What are amp datasets? Is it a fancy way of saying data? Also, what would i be expected to know about metadata?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.
Here's the ArcGIS help section on metadata. Read some of this http://resources.arcgis.com/en/help/main/10.1/#/What_is_metadata/003t00000001000000/
If you have access to ArcCatalog, you can then take a look at the metadata that is generated by default for a spatial dataset. Highlight a spatial dataset (like a shapefile or layer in fgdb), hit the Description tab, you'll see a description of data and thumbnail. Then go to Customize > ArcCatalog Options > Metadata > Metadata Style, change to use the newer "North American Profile ISO 19115 2003" style, hit okay. Click out of Description tab and back into it, and you'll see a whole bunch of fields for that standard. You could then edit those -- it is likely someone may want you to fill these in with information for your internship.
Behind the scenes, ArcCatalog saves metadata as an XML file when using a shapefile or inserts it as a long XML string into a database (like a layer in a fgdb). XML has a dtd or xsd that validates the structure of the XML (e.g. whether an element is mandatory or can occur multiple times, etc.) ArcCatalog or other tools will use a xsd/dtd to validate the metadata based on the chosen metadata style.
Here's some information on the older FGDC (CSDGM) format (which is still used quite a bit) and the ISO 19115/19115 NAP/19139 -- the ISO ones are essentially the same thing. And they all (including FGDC) use XML for structure and validation. http://www.fgdc.gov/metadata/geospatial-metadata-standards