diff --git a/nlsr_lsdb.cpp b/nlsr_lsdb.cpp
new file mode 100644
index 0000000..a82c8a3
--- /dev/null
+++ b/nlsr_lsdb.cpp
@@ -0,0 +1,145 @@
+#include<string>
+#include "nlsr_lsdb.hpp"
+#include "nlsr.hpp"
+
+using namespace std;
+
+
+
+
+
+bool 
+Lsdb::doesLsaExist(string key, int lsType)
+{
+	if ( lsType == 1)
+	{
+		return doesNameLsaExist(key);
+	}
+	else if ( lsType == 2)
+	{
+		return doesAdjLsaExist(key);
+	}
+	else if ( lsType == 3)
+	{
+		return doesCorLsaExist(key);
+	}
+	
+	return false;
+	
+}
+
+static bool
+nameLsaCompare(NameLsa& nlsa1, NameLsa& nlsa2){
+	return nlsa1.getLsaKey()==nlsa1.getLsaKey();
+}
+
+static bool
+nameLsaCompareByKey(NameLsa& nlsa1, string& key){
+	return nlsa1.getLsaKey()==key;
+}
+
+
+bool
+Lsdb::buildAndInstallOwnNameLsa(nlsr& pnlsr)
+{
+	NameLsa nameLsa(pnlsr.getConfParameter().getRouterPrefix()
+					, 1
+					, pnlsr.getNameLsaSeq()+1
+					, pnlsr.getConfParameter().getRouterDeadInterval()
+					, pnlsr.getNpl() );
+	pnlsr.setNameLsaSeq(pnlsr.getNameLsaSeq()+1);
+	cout<<nameLsa;
+	return installNameLsa(nameLsa);
+
+}
+
+NameLsa& 
+Lsdb::getNameLsa(string key)
+{
+	std::list<NameLsa >::iterator it = std::find_if( nameLsdb.begin(), 
+																		nameLsdb.end(),	
+   																	bind(nameLsaCompareByKey, _1, key));
+
+	if( it != nameLsdb.end()){
+		return (*it);
+	}
+}
+
+
+
+bool 
+Lsdb::installNameLsa(NameLsa &nlsa)
+{
+	bool doesLsaExist_ = doesNameLsaExist(nlsa.getLsaKey());
+	if ( !doesLsaExist_ )
+	{
+		// add name LSA
+		addNameLsa(nlsa);
+		// update NPT and FIB
+	}
+	else
+	{
+		// check for newer name LSA
+		NameLsa oldNameLsa=getNameLsa(nlsa.getLsaKey());
+		// Discard or Update Name lsa, NPT, FIB
+	}
+	
+	return true;
+}
+
+bool 
+Lsdb::addNameLsa(NameLsa &nlsa)
+{
+	std::list<NameLsa >::iterator it = std::find_if( nameLsdb.begin(), 
+																		nameLsdb.end(),	
+   																	bind(nameLsaCompare, _1, nlsa));
+
+	if( it == nameLsdb.end()){
+		nameLsdb.push_back(nlsa);
+		return true;
+	}
+	return false;
+}
+
+bool 
+Lsdb::removeNameLsa(string& key)
+{
+	return false;
+}
+	
+void 
+Lsdb::printNameLsdb()
+{
+	for( std::list<NameLsa>::iterator it=nameLsdb.begin(); 
+	                                                 it!= nameLsdb.end() ; it++)
+	{
+		cout<< (*it) <<endl;
+	}
+}
+
+bool 
+Lsdb::doesNameLsaExist(string key)
+{
+	std::list<NameLsa >::iterator it = std::find_if( nameLsdb.begin(), 
+																		nameLsdb.end(),	
+   																	bind(nameLsaCompareByKey, _1, key));
+
+	if( it == nameLsdb.end()){
+		return false;
+	}
+
+	return true;
+}
+
+
+bool 
+Lsdb::doesAdjLsaExist(string key)
+{
+	return false;
+}
+
+bool 
+Lsdb::doesCorLsaExist(string key)
+{
+	return false;
+}