diff --git a/src/main/kotlin/unibz.cs.semint.kprime/adapter/file/FileIOAdapter.kt b/src/main/kotlin/unibz.cs.semint.kprime/adapter/file/FileIOAdapter.kt
index efc8acbef3d4ca6435a1acfd1f73e7af1c58af80..88d18f56a32ec75d5f79bdc1770ef5fc3828a3e7 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/adapter/file/FileIOAdapter.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/adapter/file/FileIOAdapter.kt
@@ -1,10 +1,10 @@
 package unibz.cs.semint.kprime.adapter.file
 
-import unibz.cs.semint.kprime.usecase.service.FileIOService
+import unibz.cs.semint.kprime.usecase.service.FileIOServiceI
 import java.io.*
 
 
-class FileIOAdapter : FileIOService {
+class FileIOAdapter : FileIOServiceI {
     override fun writeOnWorkingFilePath(db: String, fileName: String): String {
         val writer = BufferedWriter(FileWriter(fileName));
         writer.write(db);
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/adapter/repository/MetaSchemaJdbcAdapter.kt b/src/main/kotlin/unibz.cs.semint.kprime/adapter/repository/MetaSchemaJdbcAdapter.kt
index 65b2a30800eae604d2bef53e0b265753b4354c04..0894e9143bd999f3fadf874675d32ae7fff8e4b4 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/adapter/repository/MetaSchemaJdbcAdapter.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/adapter/repository/MetaSchemaJdbcAdapter.kt
@@ -33,13 +33,13 @@ class MetaSchemaJdbcAdapter : IMetaSchemaRepository {
             db.id=UUID.randomUUID().toString()
             db.schema.name="sourceName"
             db.schema.id=UUID.randomUUID().toString()
-            var tableNames :List<String>
+            var tableNames  =  mutableListOf<String>()
             if (table!=null && table.isNotEmpty()) {
-                tableNames= listOf(table)
+                tableNames= mutableListOf(table)
             } else {
-                tableNames = readTables(metaData,db)
+                tableNames.addAll(readTables(metaData,db))
             }
-            readViews(metaData,db)
+            tableNames.addAll(readViews(metaData,db))
             readColumns(metaData, tableNames,db)
             readPrimaryKeys(metaData, tableNames,db)
             readForeignKeys(metaData, tableNames,db)
@@ -63,11 +63,12 @@ class MetaSchemaJdbcAdapter : IMetaSchemaRepository {
     private fun readViews(metaData: DatabaseMetaData, db: Database):List<String> {
         val views = metaData.getTables(null, null, null, arrayOf("VIEW"))
         val viewNames = mutableListOf<String>()
-        println("++++++++++++++++++++++++++++++++++++++++++++++++")
-        QueryJdbcAdapter().printResultSet(views)
+        //println("++++++++++++++++++++++++++++++++++++++++++++++++")
+        //QueryJdbcAdapter().printResultSet(views)
         println("++++++++++++++++++++++++++++++++++++++++++++++++")
         while (views.next()) {
             val viewName = "${views.getString("TABLE_NAME")}"
+            println(viewName)
             viewNames.add(viewName)
             val table = Table()
             table.name=viewName
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XMLSerializerJacksonAdapter.kt b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XMLSerializerJacksonAdapter.kt
index ceabed61e48d40816bc591bbb15a25b25db52293..e2c95d71018107de19a156151dc9131be83559c9 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XMLSerializerJacksonAdapter.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XMLSerializerJacksonAdapter.kt
@@ -10,10 +10,9 @@ import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.ddl.Table
 import unibz.cs.semint.kprime.domain.dml.ChangeSet
 import unibz.cs.semint.kprime.domain.dql.Query
-import unibz.cs.semint.kprime.domain.dql.Select
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 
-class XMLSerializerJacksonAdapter : IXMLSerializerService {
+class XMLSerializerJacksonAdapter : SerializerServiceI {
 
 
     // table
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XSLTransformerJaxpAdapter.kt b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XSLTransformerJaxpAdapter.kt
index 87964f295d5dc7b2b03e010f97704d150c07ecaf..d886495bc20a54255b6abb8c865b86160e96a977 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XSLTransformerJaxpAdapter.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/XSLTransformerJaxpAdapter.kt
@@ -1,13 +1,13 @@
 package unibz.cs.semint.kprime.adapter.service
 
-import unibz.cs.semint.kprime.usecase.service.IXSLTransformerService
+import unibz.cs.semint.kprime.usecase.service.XSLTransformerServiceI
 import java.io.FileOutputStream
 import javax.xml.transform.OutputKeys
 import javax.xml.transform.TransformerFactory
 import javax.xml.transform.stream.StreamResult
 import javax.xml.transform.stream.StreamSource
 
-class XSLTransformerJaxpAdapter:IXSLTransformerService {
+class XSLTransformerJaxpAdapter:XSLTransformerServiceI {
     override fun trasform(xsl: String, xml: String, out: String) {
         val tFactory = TransformerFactory.newInstance()
         val fileOutputStream = FileOutputStream(out)
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/YAMLSerializerJacksonAdapter.kt b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/YAMLSerializerJacksonAdapter.kt
new file mode 100644
index 0000000000000000000000000000000000000000..c1bec0df07a053ecfe38bc16725213dc9d74d083
--- /dev/null
+++ b/src/main/kotlin/unibz.cs.semint.kprime/adapter/service/YAMLSerializerJacksonAdapter.kt
@@ -0,0 +1,72 @@
+package unibz.cs.semint.kprime.adapter.service
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory
+import unibz.cs.semint.kprime.domain.Transformer
+import unibz.cs.semint.kprime.domain.ddl.Constraint
+import unibz.cs.semint.kprime.domain.ddl.Database
+import unibz.cs.semint.kprime.domain.ddl.Table
+import unibz.cs.semint.kprime.domain.dml.ChangeSet
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
+import java.io.StringWriter
+
+class YAMLSerializerJacksonAdapter : SerializerServiceI {
+    override fun serializeTable(table: Table): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun deserializeTable(s: String): Table {
+        TODO("Not yet implemented")
+    }
+
+    override fun prettyTable(table: Table): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun serializeDatabase(database: Database): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun deserializeDatabase(s: String): Database {
+        TODO("Not yet implemented")
+    }
+
+    override fun prettyDatabase(db: Database): String {
+        val objectMapper = ObjectMapper(YAMLFactory())
+        val outWriter = StringWriter()
+        objectMapper.writeValue(outWriter,db)
+        return outWriter.toString()
+    }
+
+    override fun serializeConstraint(constraint: Constraint): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun deserializeConstraint(s: String): Constraint {
+        TODO("Not yet implemented")
+    }
+
+    override fun serializeChangeSet(changeset: ChangeSet): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun deserializeChangeSet(changeset: String): ChangeSet {
+        TODO("Not yet implemented")
+    }
+
+    override fun prettyChangeSet(table: ChangeSet): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun serializeTransfomer(transformer: Transformer): String {
+        TODO("Not yet implemented")
+    }
+
+    override fun deserializeTransformer(transformer: String): Transformer {
+        TODO("Not yet implemented")
+    }
+
+    override fun deepclone(database: Database): Database {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/ApplyChangeSetUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/ApplyChangeSetUseCase.kt
index 9ed0b4236ab992821f465d15e393c47ef005c5d5..f6afed4418e07c6ae022ec892690fff593d25fc3 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/ApplyChangeSetUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/ApplyChangeSetUseCase.kt
@@ -4,12 +4,12 @@ import unibz.cs.semint.kprime.domain.ddl.Column
 import unibz.cs.semint.kprime.domain.ddl.Constraint
 import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.dml.*
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 
 /**
  * Given a Databse will apply changes following a given changeSet modification.
  */
-class ApplyChangeSetUseCase(serializer : IXMLSerializerService) {
+class ApplyChangeSetUseCase(serializer : SerializerServiceI) {
 
     val serializer = serializer
 
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/MetaSchemaReadUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/MetaSchemaReadUseCase.kt
index 9056678863450ef562b712cf75171de0a1aa9a0d..7d6e3f341b52398b1c6f0d28e88c2ca879aee3e2 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/MetaSchemaReadUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/MetaSchemaReadUseCase.kt
@@ -4,7 +4,7 @@ import unibz.cs.semint.kprime.domain.*
 import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.usecase.UseCaseResult
 import unibz.cs.semint.kprime.usecase.repository.IMetaSchemaRepository
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 import java.util.*
 
 
@@ -32,7 +32,7 @@ class MetaSchemaReadUseCase() {
         """.trimIndent()
     }
 
-    fun doit(datasource: DataSource,line: String, metaSchemaRepository: IMetaSchemaRepository, xmlSerializer:IXMLSerializerService) : UseCaseResult<Database> {
+    fun doit(datasource: DataSource,line: String, metaSchemaRepository: IMetaSchemaRepository, xmlSerializer:SerializerServiceI) : UseCaseResult<Database> {
         val tokens = tokenize(line)
         if (tokens.size<2) { return UseCaseResult("Usage:" + usage(), null);}
         if (tokens[1] == "?") { return UseCaseResult(oneline(), null);}
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XMLSerializeUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XMLSerializeUseCase.kt
index 6d2e53e35de0b9d9f1a86a09a4ef8adf479a99ea..5bab6339418bf6ae082ed782d434bd1c7de0e442 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XMLSerializeUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XMLSerializeUseCase.kt
@@ -6,9 +6,9 @@ import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.ddl.Table
 import unibz.cs.semint.kprime.domain.dml.ChangeSet
 import unibz.cs.semint.kprime.usecase.UseCaseResult
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 
-class XMLSerializeUseCase(val xmlSerializerService: IXMLSerializerService) {
+class XMLSerializeUseCase(val xmlSerializerService: SerializerServiceI) {
 
 
     // table
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XPathTransformUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XPathTransformUseCase.kt
index 6e10c0b59e6ee2f54f234931d59cabfb3a1ad3dc..98f7965937398dfc721ef1b6625d3245696aefec 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XPathTransformUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XPathTransformUseCase.kt
@@ -7,7 +7,7 @@ import org.w3c.dom.NodeList
 import unibz.cs.semint.kprime.adapter.service.XMLSerializerJacksonAdapter
 import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.dml.ChangeSet
-import unibz.cs.semint.kprime.usecase.service.FileIOService
+import unibz.cs.semint.kprime.usecase.service.FileIOServiceI
 import java.io.File
 import java.io.StringWriter
 import javax.xml.parsers.DocumentBuilderFactory
@@ -55,7 +55,7 @@ class XPathTransformUseCase  {
         val changeSet = compute(dbFilePath, templateFilePath, xPaths, tranformerParmeters)
 
         //val dbXml = XPathTransformUseCase::class.java.getResource("/${dbFilePath}").readText()
-        val dbXml = FileIOService.readString(FileIOService.inputStreamFromPath(dbFilePath))
+        val dbXml = FileIOServiceI.readString(FileIOServiceI.inputStreamFromPath(dbFilePath))
         val serializer = XMLSerializerJacksonAdapter()
         val db = serializer.deserializeDatabase(dbXml)
         val newdb = ApplyChangeSetUseCase(serializer).apply(db, changeSet)
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XSLTrasformUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XSLTrasformUseCase.kt
index 60176ffde86397d8497a2bf0950b66380750cab5..fa8347e2c0b289bcf183ff5958b12a79c8cc12a9 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XSLTrasformUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/common/XSLTrasformUseCase.kt
@@ -1,9 +1,9 @@
 package unibz.cs.semint.kprime.usecase.common
 
 import unibz.cs.semint.kprime.usecase.UseCaseResult
-import unibz.cs.semint.kprime.usecase.service.IXSLTransformerService
+import unibz.cs.semint.kprime.usecase.service.XSLTransformerServiceI
 
-class XSLTrasformUseCase (val transformer:IXSLTransformerService){
+class XSLTrasformUseCase (val transformer:XSLTransformerServiceI){
 
     fun transform(xsl: String, xml: String, out: String): UseCaseResult<Unit> {
         return UseCaseResult("done", transformer.trasform(xsl, xml, out))
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerVUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerVUseCase.kt
index 315914b4f92491c66180c8a59ad195a31c2db5d5..13bd9bbe7425f3e0d95e15454b920ee9ea9e4959 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerVUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerVUseCase.kt
@@ -7,13 +7,12 @@ import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.usecase.common.ApplyChangeSetUseCase
 import unibz.cs.semint.kprime.usecase.TransformerUseCase
 import unibz.cs.semint.kprime.usecase.common.XPathTransformUseCase
-import unibz.cs.semint.kprime.usecase.service.FileIOService
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
-import java.io.StringWriter
+import unibz.cs.semint.kprime.usecase.service.FileIOServiceI
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 
-class TransformerVUseCase(val serializer: IXMLSerializerService, val fileIOAdapter: FileIOService) : TransformerUseCase {
+class TransformerVUseCase(val serializer: SerializerServiceI, val fileIOAdapter: FileIOServiceI) : TransformerUseCase {
 
     override fun decompose(db: Database, params:Map<String,Any>): Transformation {
         val tranformerParmeters = mutableMapOf<String,Any>()
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerXUseCase.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerXUseCase.kt
index 3e4c8b9bfd176d36fa79fcc08d8eca1d8cc2855a..4667f6880240fd28e743484eff926271e8963676 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerXUseCase.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/current/TransformerXUseCase.kt
@@ -7,14 +7,11 @@ import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.usecase.TransformerUseCase
 import unibz.cs.semint.kprime.usecase.common.ApplyChangeSetUseCase
 import unibz.cs.semint.kprime.usecase.common.XPathTransformUseCase
-import unibz.cs.semint.kprime.usecase.service.FileIOService
-import unibz.cs.semint.kprime.usecase.service.IXMLSerializerService
+import unibz.cs.semint.kprime.usecase.service.FileIOServiceI
+import unibz.cs.semint.kprime.usecase.service.SerializerServiceI
 import java.io.File
-import java.io.FileInputStream
-import java.io.FileReader
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
-import java.util.*
 
 /**
  * Usage e.g.:
@@ -30,8 +27,8 @@ import java.util.*
  *
  */
 class TransformerXUseCase(
-        val serializer: IXMLSerializerService,
-        val fileIOAdapter: FileIOService,
+        val serializer: SerializerServiceI,
+        val fileIOAdapter: FileIOServiceI,
         val workingDir:String,
         val docoTemplateFilePath:String,
         val decoXPathsFilePath:String,
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOService.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOServiceI.kt
similarity index 98%
rename from src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOService.kt
rename to src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOServiceI.kt
index 39dee088797cbeef8ca92ab4479f873ac0b04c4a..3e6fef391223063a628fb415533abd1eca10a356 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOService.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/FileIOServiceI.kt
@@ -7,7 +7,7 @@ import java.io.FileInputStream
 import java.io.InputStream
 import java.nio.charset.StandardCharsets
 
-interface FileIOService {
+interface FileIOServiceI {
     fun writeOnWorkingFilePath(db: String, fileName: String): String
 
     companion object {
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXMLSerializerService.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/SerializerServiceI.kt
similarity index 96%
rename from src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXMLSerializerService.kt
rename to src/main/kotlin/unibz.cs.semint.kprime/usecase/service/SerializerServiceI.kt
index 716669bdcf5741239cfc2726586511365746f003..8276b9b6b3a4330111447c99a7ace5a688102f4f 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXMLSerializerService.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/SerializerServiceI.kt
@@ -6,7 +6,7 @@ import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.ddl.Table
 import unibz.cs.semint.kprime.domain.dml.ChangeSet
 
-interface IXMLSerializerService {
+interface SerializerServiceI {
     fun serializeTable(table: Table): String
     fun deserializeTable(s: String): Table
     fun prettyTable(table: Table): String
diff --git a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXSLTransformerService.kt b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/XSLTransformerServiceI.kt
similarity index 74%
rename from src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXSLTransformerService.kt
rename to src/main/kotlin/unibz.cs.semint.kprime/usecase/service/XSLTransformerServiceI.kt
index 04962e9cda7c3595737157e06ab0be4a92b2eb57..d17dec798305c6079f07d227852115a6609a4718 100644
--- a/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/IXSLTransformerService.kt
+++ b/src/main/kotlin/unibz.cs.semint.kprime/usecase/service/XSLTransformerServiceI.kt
@@ -1,5 +1,5 @@
 package unibz.cs.semint.kprime.usecase.service
 
-interface IXSLTransformerService {
+interface XSLTransformerServiceI {
     fun trasform(xsl:String,xml:String,out:String)
 }
\ No newline at end of file
diff --git a/src/test/kotlin/unibz.cs.semint.kprime/usecase/ApplyChangeSetUseCaseTest.kt b/src/test/kotlin/unibz.cs.semint.kprime/usecase/ApplyChangeSetUseCaseTest.kt
index 343e231ec6c8b29f1971606a04925343762cdbc6..a513a689e29340d92fdb9f1afbf892b9da1159d1 100644
--- a/src/test/kotlin/unibz.cs.semint.kprime/usecase/ApplyChangeSetUseCaseTest.kt
+++ b/src/test/kotlin/unibz.cs.semint.kprime/usecase/ApplyChangeSetUseCaseTest.kt
@@ -35,7 +35,6 @@ class ApplyChangeSetUseCaseTest {
         val db = setUpPersonDb()
         //db.mappings = mutableListOf()
         val serializeDb = serializer.serializeDatabase(db)
-        println(serializeDb)
         val newDb = serializer.deserializeDatabase(serializeDb)
         //newDb.mappings = mutableListOf()
         val serializeNewDb = serializer.serializeDatabase(newDb)
diff --git a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XMLDeserializerDatabaseTest.kt b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XMLDeserializerDatabaseTest.kt
index d077ba87c5e3b93572bde6396fec0a3a38822342..4549f085c99402d01d125eb9bbb2d7d91940ca54 100644
--- a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XMLDeserializerDatabaseTest.kt
+++ b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XMLDeserializerDatabaseTest.kt
@@ -101,7 +101,6 @@ class XMLDeserializerDatabaseTest {
             FROM alias 
         """.trimIndent()))
 
-        println(serializer.prettyDatabase(db))
         assertEquals(3, db.mappings().size)
         assertNotNull(database.mapping("query2"))
         assertEquals("*",deserialized!!.ok!!.mapping("query2")!!.select!!.attributes[0]?.name)
diff --git a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XStreamTest.kt b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XStreamTest.kt
index 300be90ee8cc97624afd84efca4f1370e1785e8d..629fb5146f27561dd00fbf7c22baa924e5d257cd 100644
--- a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XStreamTest.kt
+++ b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/XStreamTest.kt
@@ -52,7 +52,7 @@ class XStreamTest {
         val db: Database = xstream.fromXML(dbxml) as Database
         // then
         val prettyDatabase = XMLSerializerJacksonAdapter().prettyDatabase(db)
-        println(prettyDatabase)
+        //println(prettyDatabase)
         assertEquals(db.schema.tables().size,0)
     }
 }
\ No newline at end of file
diff --git a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/YAMLSerializerDatabaseTest.kt b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/YAMLSerializerDatabaseTest.kt
index 2016fffef6526a0b45820a4694d6e89d777adcfd..73d6e55b317b6931b24ed99b8fd85b5f21409f99 100644
--- a/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/YAMLSerializerDatabaseTest.kt
+++ b/src/test/kotlin/unibz.cs.semint.kprime/usecase/serialize/YAMLSerializerDatabaseTest.kt
@@ -6,7 +6,6 @@ import org.junit.Test
 import unibz.cs.semint.kprime.domain.ddl.Database
 import unibz.cs.semint.kprime.domain.ddl.Schema
 import unibz.cs.semint.kprime.domain.ddl.Table
-import java.io.File
 import java.io.StringWriter
 import kotlin.test.assertEquals