NewBackend creates a new Backend.

ErrCollectionAlreadyExist indicates that a collection already exists.

ErrInvalidCollectionName indicates that a collection didn't pass name checks.

ErrInvalidDatabaseName indicates that a database didn't pass name checks.

Errors from HanaDB.

ErrSchemaAlreadyExist indicates that a schema already exists.

ErrSchemaNotExist indicates that there is no such schema.

ErrTableNotExist indicates that there is no such table.

NewBackendParams represents the parameters of NewBackend function.