I believe you want to get all the possible values along with the text for a picklist attribute. you can use the "MetaDataWebservice" for this purpose. you don't need to access the database.
http://msdn.microsoft.com/en-us/library/cc151047.aspx
here is an example on how to use "ReteriveAttributeMetaData".
The following example shows how to use the RetrieveAttribute message to reterive all the information about the picklist attribute.
// Create an authentication token.
CrmAuthenticationToken token = new CrmAuthenticationToken();
token.OrganizationName = "AdventureWorksCycle";
// You can use enums.cs from the SDK\Helpers folder to get the enumeration for AD Authentication.
token.AuthenticationType = 0;
// Create the metadata Web service;
MetadataService service = new MetadataService();
service.Url = "http://<servername>:<port>/MSCRMServices/2007/MetadataService.asmx";
service.CrmAuthenticationTokenValue = token;
service.Credentials = System.Net.CredentialCache.DefaultCredentials;
service.PreAuthenticate = true;
// Create the request
RetrieveAttributeRequest attributeRequest = new RetrieveAttributeRequest();
attributeRequest.EntityLogicalName = EntityName.contact.ToString();
attributeRequest.LogicalName = "picklistattributename";
attributeRequest.RetrieveAsIfPublished = true;
RetrieveAttributeResponse attributeResponse = (RetrieveAttributeResponse)metadataService.Execute(attributeRequest);
// Access the retrieved attribute
PicklistAttributeMetadata retrievedAttributeMetadata = (PicklistAttributeMetadata)attributeResponse.AttributeMetadata;
See Also
Picklist name in Database Table
