diff --git a/src/main/java/org/gcube/documentstore/exception/InvalidValueException.java b/src/main/java/org/gcube/documentstore/exception/InvalidValueException.java
new file mode 100644
index 0000000..473423d
--- /dev/null
+++ b/src/main/java/org/gcube/documentstore/exception/InvalidValueException.java
@@ -0,0 +1,13 @@
+package org.gcube.documentstore.exception;
+
+public class InvalidValueException extends Exception {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 2449589259703195853L;
+	
+	public InvalidValueException() {
+		super();
+	}
+}
diff --git a/src/main/java/org/gcube/documentstore/records/Record.java b/src/main/java/org/gcube/documentstore/records/Record.java
new file mode 100644
index 0000000..42bad89
--- /dev/null
+++ b/src/main/java/org/gcube/documentstore/records/Record.java
@@ -0,0 +1,119 @@
+/**
+ * 
+ */
+package org.gcube.documentstore.records;
+
+import java.io.Serializable;
+import java.util.Calendar;
+import java.util.Map;
+import java.util.Set;
+import java.util.SortedSet;
+
+import org.gcube.documentstore.exception.InvalidValueException;
+
+/**
+ * @author Luca Frosini (ISTI - CNR)
+ */
+public interface Record extends Comparable<Record>, Serializable {
+	/**
+	 * @return a Set containing the keys of required fields
+	 * The returned Set MUST be a copy of the internal representation. 
+	 * Any modification to the returned Set MUST not affect the object
+	 */
+	public Set<String> getRequiredFields();
+	
+	/**
+	 * @return a Set containing the keys of computed fields
+	 * The returned Set MUST be a copy of the internal representation. 
+	 * Any modification to the returned Set MUST not affect the object
+	 */
+	public Set<String> getComputedFields();
+	
+	/**
+	 * @return Querable Keys as SortedSet
+	 * @throws Exception
+	 */
+	public SortedSet<String> getQuerableKeys() throws Exception;
+	
+	/**
+	 * Return the {@link Record} Type
+	 * @return {@link Record} Type
+	 */
+	public String getRecordType();
+	
+	
+	/**
+	 * Return the unique id for this {@link Record}
+	 * @return {@link Record} Unique ID
+	 */
+	public String getId();
+
+	/**
+	 * The ID SHOULD be automatically created by the implementation Class. 
+	 * Set the ID only if you really know what you are going to do.
+	 * Set the unique id for this {@link Record}
+	 * @param id Unique ID
+	 * @throws InvalidValueException
+	 */
+	public void setId(String id) throws InvalidValueException;
+
+	/**
+	 * Return the instant when this {@link Record} was created.
+	 * @return the creation time for this {@link Record}
+	 */
+	public Calendar getCreationTime();
+
+	/**
+	 * The CreationTime is automatically created by the implementation Class. 
+	 * Set the CreationTime only if you really know what you are going to do.
+	 * Set the instant when this {@link Record} was created.
+	 * @param creationTime Creation Time
+	 * @throws InvalidValueException
+	 */
+	public void setCreationTime(Calendar creationTime) throws InvalidValueException;
+	
+	/**
+	 * Return all resource-specific properties. The returned Map is a copy of
+	 * the internal representation. Any modification to the returned Map MUST
+	 * not affect the object
+	 * @return a Map containing the properties
+	 */
+	public Map<String, Serializable> getResourceProperties();
+
+	/**
+	 * Set all resource-specific properties, replacing existing ones
+	 */
+	public void setResourceProperties(Map<String, ? extends Serializable> resourceSpecificProperties) throws InvalidValueException;
+
+	/**
+	 * Return the value of the given resource property.
+	 * @param key the key of the requested property 
+	 * @return the value of the given resource property
+	 */
+	public Serializable getResourceProperty(String key);
+	
+	/**
+	 * Set the value of the given resource property.
+	 * If the key has the value of one of the predefined property, the value
+	 * is validated.
+	 * @param key the key of the requested property 
+	 * @param value the value of the given resource property
+	 */
+	public void setResourceProperty(String key, Serializable value) throws InvalidValueException;
+	
+	/**
+	 * Remove a property from Record. 
+	 * This API is intended for intern use only.
+	 * @param key  the key of the requested property to remove
+	 */
+	public void removeResourceProperty(String key);
+	
+	/**
+	 * Validate the Resource Record.
+	 * The validation check if all the Required Field are set and has valid 
+	 * value.
+	 * @throws InvalidValueException
+	 */
+	public void validate() throws InvalidValueException;
+	
+}
diff --git a/src/main/java/org/gcube/documentstore/records/implementation/AbstractRecord.java b/src/main/java/org/gcube/documentstore/records/implementation/AbstractRecord.java
new file mode 100644
index 0000000..3f28445
--- /dev/null
+++ b/src/main/java/org/gcube/documentstore/records/implementation/AbstractRecord.java
@@ -0,0 +1,152 @@
+/**
+ * 
+ */
+package org.gcube.documentstore.records.implementation;
+
+import java.io.Serializable;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.SortedSet;
+import java.util.TreeSet;
+import java.util.UUID;
+
+import org.gcube.documentstore.exception.InvalidValueException;
+import org.gcube.documentstore.records.Record;
+
+
+/**
+ * @author Luca Frosini (ISTI - CNR)
+ */
+public abstract class AbstractRecord implements Record {
+	
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 8746066891880733502L;
+
+	@Override
+	public SortedSet<String> getQuerableKeys() throws Exception {
+		return new TreeSet<>();
+	}
+	
+	public AbstractRecord() {
+	}
+	
+	public AbstractRecord(Map<String,? extends Serializable> properties) throws InvalidValueException {
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Set<String> getRequiredFields() {
+		return new HashSet<String>();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Set<String> getComputedFields() {
+		return new HashSet<String>();
+	}
+	
+	public Set<String> getAggregatedFields() {
+		return new HashSet<String>();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public String getId() {
+		return UUID.randomUUID().toString();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void setId(String id) throws InvalidValueException {
+
+	}
+	
+	public static Calendar timestampToCalendar(long millis) {
+		return Calendar.getInstance();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Calendar getCreationTime() {
+		return Calendar.getInstance();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void setCreationTime(Calendar creationTime) throws InvalidValueException {
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Map<String,Serializable> getResourceProperties() {
+		return new HashMap<String,Serializable>();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void setResourceProperties(Map<String,? extends Serializable> properties) throws InvalidValueException {
+
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Serializable getResourceProperty(String key) {
+		return "TEST";
+	}
+	
+	@Override
+	public void removeResourceProperty(String key) {
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void setResourceProperty(String key, Serializable value) throws InvalidValueException {
+
+	}
+	
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void validate() throws InvalidValueException {
+		
+	}
+	
+	@Override
+	public String toString() {
+		return "{}";
+	}
+	
+	
+	@Override
+	public int compareTo(Record record) {
+		return 0;
+	}
+	
+}