Merge pull request #8245 from mandy-chessell/oak2024

Separate query for templates
odpi · Jun 20, 2024 · 7404422 · 7404422
2 parents 6cf8c12 + 0b32bf2
commit 7404422
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diff --git a/CoreContentPackGUIDMap.json b/CoreContentPackGUIDMap.json
diff --git a/content-packs/CloudInformationModel.json b/content-packs/CloudInformationModel.json
diff --git a/content-packs/CocoBusinessSystemsArchive.omarchive b/content-packs/CocoBusinessSystemsArchive.omarchive
diff --git a/content-packs/CocoClinicalTrialsTemplatesArchive.omarchive b/content-packs/CocoClinicalTrialsTemplatesArchive.omarchive
diff --git a/content-packs/CocoComboArchive.json b/content-packs/CocoComboArchive.json
diff --git a/content-packs/CocoComboArchive.omarchive b/content-packs/CocoComboArchive.omarchive
diff --git a/content-packs/CocoGovernanceEngineDefinitionsArchive.json b/content-packs/CocoGovernanceEngineDefinitionsArchive.json
diff --git a/content-packs/CocoGovernanceEngineDefinitionsArchive.omarchive b/content-packs/CocoGovernanceEngineDefinitionsArchive.omarchive
diff --git a/content-packs/CocoGovernanceProgramArchive.omarchive b/content-packs/CocoGovernanceProgramArchive.omarchive
diff --git a/content-packs/CocoOrganizationArchive.omarchive b/content-packs/CocoOrganizationArchive.omarchive
diff --git a/content-packs/CocoSustainabilityArchive.omarchive b/content-packs/CocoSustainabilityArchive.omarchive
diff --git a/content-packs/CocoTypesArchive.omarchive b/content-packs/CocoTypesArchive.omarchive
diff --git a/content-packs/CoreContentPack.omarchive b/content-packs/CoreContentPack.omarchive
diff --git a/content-packs/OpenMetadataTypes.omarchive b/content-packs/OpenMetadataTypes.omarchive
diff --git a/content-packs/SimpleAPICatalog.json b/content-packs/SimpleAPICatalog.json
diff --git a/content-packs/SimpleCatalog.json b/content-packs/SimpleCatalog.json
diff --git a/content-packs/SimpleDataCatalog.json b/content-packs/SimpleDataCatalog.json
diff --git a/content-packs/SimpleEventCatalog.json b/content-packs/SimpleEventCatalog.json
diff --git a/content-packs/SimpleGovernanceCatalog.json b/content-packs/SimpleGovernanceCatalog.json
diff --git a/open-metadata-distribution/omag-server-platform/build.gradle b/open-metadata-distribution/omag-server-platform/build.gradle
@@ -53,7 +53,8 @@ dependencies {
     implementation project(':open-metadata-implementation:adapters:open-connectors:system-connectors:apache-atlas-connectors')
     implementation project(':open-metadata-implementation:adapters:open-connectors:system-connectors:apache-kafka-connectors')
     implementation project(':open-metadata-implementation:adapters:open-connectors:system-connectors:egeria-system-connectors')
-    implementation project(':open-metadata-implementation:adapters:open-connectors:system-connectors:postgres-server-connectors')
+    implementation project(':open-metadata-implementation:adapters:open-connectors:data-manager-connectors:postgres-server-connectors')
+    implementation project(':open-metadata-implementation:adapters:open-connectors:data-manager-connectors:unity-catalog-connectors')
     implementation project(':open-metadata-implementation:adapters:open-connectors:secrets-store-connectors:env-variable-secrets-store-connector')
     implementation project(':open-metadata-implementation:access-services:asset-consumer:asset-consumer-client')
     implementation project(':open-metadata-implementation:access-services:asset-lineage:asset-lineage-client')
@@ -215,7 +216,7 @@ distributions {
                 from { project(':open-metadata-implementation:adapters:open-connectors:system-connectors:apache-atlas-connectors').jar }
                 from { project(':open-metadata-implementation:adapters:open-connectors:system-connectors:apache-kafka-connectors').jar }
                 from { project(':open-metadata-implementation:adapters:open-connectors:system-connectors:egeria-system-connectors').jar }
-                from { project(':open-metadata-implementation:adapters:open-connectors:system-connectors:postgres-server-connectors').shadowJar }
+                from { project(':open-metadata-implementation:adapters:open-connectors:data-manager-connectors:postgres-server-connectors').shadowJar }
                 fileMode = 0755
             }
             into('assembly/platform/extra') {

diff --git a/...a/org/odpi/openmetadata/accessservices/assetlineage/handlers/AssetContextHandlerTest.java b/...a/org/odpi/openmetadata/accessservices/assetlineage/handlers/AssetContextHandlerTest.java
@@ -65,7 +65,7 @@ class AssetContextHandlerTest {
     @Mock
     private List<String> supportedZones;
     @Mock
-    private OpenMetadataAPIGenericHandler genericHandler;
+    private OpenMetadataAPIGenericHandler<?> genericHandler;
     @Mock
     ClockService clockService;
     @InjectMocks

diff --git a/...st/java/org/odpi/openmetadata/accessservices/assetlineage/handlers/HandlerHelperTest.java b/...st/java/org/odpi/openmetadata/accessservices/assetlineage/handlers/HandlerHelperTest.java
@@ -82,7 +82,7 @@ class HandlerHelperTest {
     @Mock
     private OMRSRepositoryHelper repositoryHelper;
     @Mock
-    private OpenMetadataAPIGenericHandler genericHandler;
+    private OpenMetadataAPIGenericHandler<?> genericHandler;
     @Mock
     private Converter converter;
     @Mock

diff --git a/...openmetadata/accessservices/assetlineage/listeners/AssetLineageOMRSTopicListenerTest.java b/...openmetadata/accessservices/assetlineage/listeners/AssetLineageOMRSTopicListenerTest.java
@@ -399,6 +399,7 @@ private LineageEntity mockLineageEntity(EntityDetail entityDetail) {
         return lineageEntity;
     }
 
+    @SuppressWarnings(value = "unchecked")
     private void mockContext(EntityDetail entityDetail, boolean isEmptyContext) throws OCFCheckedExceptionBase, JsonProcessingException {
         Multimap<String, RelationshipsContext> context = mock(Multimap.class);
         when(context.isEmpty()).thenReturn(isEmptyContext);

diff --git a/...rg/odpi/openmetadata/accessservices/assetlineage/server/AssetLineageRestServicesTest.java b/...rg/odpi/openmetadata/accessservices/assetlineage/server/AssetLineageRestServicesTest.java
@@ -161,6 +161,7 @@ void publishEntities_responseWithUserNotAuthorizedException() throws OCFCheckedE
     }
 
     @Test
+    @SuppressWarnings(value = "unchecked")
     void publishEntity_process() throws OCFCheckedExceptionBase, JsonProcessingException {
         String methodName = "publishEntity";
         mockHandlerHelper(methodName);
@@ -179,6 +180,7 @@ void publishEntity_process() throws OCFCheckedExceptionBase, JsonProcessingExcep
     }
 
     @Test
+    @SuppressWarnings(value = "unchecked")
     void publishEntity_glossaryTerm() throws OCFCheckedExceptionBase, JsonProcessingException {
         String methodName = "publishEntity";
         mockHandlerHelper(methodName);

diff --git a/...adata-implementation/adapters/open-connectors/data-manager-connectors/README.md b/...adata-implementation/adapters/open-connectors/data-manager-connectors/README.md
@@ -0,0 +1,10 @@
+<!-- SPDX-License-Identifier: CC-BY-4.0 -->
+<!-- Copyright Contributors to the Egeria project. -->
+
+# The data manager connectors
+
+The data manager connectors work with data management platforms that
+use metadata to describe and control access to data.
+
+* [PostgreSQL Server Connectors](postgres-server-connectors) provides specialist connectors for working with PostgreSQL Servers and their databases.
+* [Unity Catalog (UC)](unity-catalog-connectors) provides specialist connectors for working with Unity Catalog.
diff --git a/...tors/postgres-server-connectors/README.md → ...tors/postgres-server-connectors/README.md b/...tors/postgres-server-connectors/README.md → ...tors/postgres-server-connectors/README.md
diff --git a/...s/postgres-server-connectors/build.gradle → ...s/postgres-server-connectors/build.gradle b/...s/postgres-server-connectors/build.gradle → ...s/postgres-server-connectors/build.gradle
diff --git a/...g/PostgresServerIntegrationConnector.java → ...g/PostgresServerIntegrationConnector.java b/...g/PostgresServerIntegrationConnector.java → ...g/PostgresServerIntegrationConnector.java
diff --git a/...og/PostgresServerIntegrationProvider.java → ...og/PostgresServerIntegrationProvider.java b/...og/PostgresServerIntegrationProvider.java → ...og/PostgresServerIntegrationProvider.java
@@ -4,7 +4,7 @@
 package org.odpi.openmetadata.adapters.connectors.postgres.catalog;
 
 import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresConfigurationProperty;
-import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresServerCatalogTarget;
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresTarget;
 import org.odpi.openmetadata.frameworks.auditlog.AuditLogReportingComponent;
 import org.odpi.openmetadata.frameworks.auditlog.ComponentDevelopmentStatus;
 import org.odpi.openmetadata.frameworks.connectors.properties.beans.ConnectorType;
@@ -84,7 +84,7 @@ public PostgresServerIntegrationProvider()
 
         super.setConnectorComponentDescription(componentDescription);
 
-        super.catalogTargets = PostgresServerCatalogTarget.getCatalogTargetTypes();
+        super.catalogTargets = PostgresTarget.getPostgresServerCatalogTargetTypes();
         super.supportedConfigurationProperties = PostgresConfigurationProperty.getPostgresServerConfigurationPropertyTypes();
     }
 }
diff --git a/...stgres/survey/PostgresAnnotationType.java → ...gres/controls/PostgresAnnotationType.java b/...stgres/survey/PostgresAnnotationType.java → ...gres/controls/PostgresAnnotationType.java
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: Apache-2.0 */
 /* Copyright Contributors to the ODPi Egeria project. */
 
-package org.odpi.openmetadata.adapters.connectors.postgres.survey;
+package org.odpi.openmetadata.adapters.connectors.postgres.controls;
 
 import org.odpi.openmetadata.frameworks.openmetadata.types.OpenMetadataType;
 import org.odpi.openmetadata.frameworks.surveyaction.controls.AnalysisStep;

diff --git a/...ntrols/PostgresConfigurationProperty.java → ...ntrols/PostgresConfigurationProperty.java b/...ntrols/PostgresConfigurationProperty.java → ...ntrols/PostgresConfigurationProperty.java
diff --git a/...controls/PostgresPlaceholderProperty.java → ...controls/PostgresPlaceholderProperty.java b/...controls/PostgresPlaceholderProperty.java → ...controls/PostgresPlaceholderProperty.java
diff --git a/...controls/PostgresServerCatalogTarget.java → ...ors/postgres/controls/PostgresTarget.java b/...controls/PostgresServerCatalogTarget.java → ...ors/postgres/controls/PostgresTarget.java
@@ -2,6 +2,7 @@
 /* Copyright Contributors to the ODPi Egeria project. */
 package org.odpi.openmetadata.adapters.connectors.postgres.controls;
 
+import org.odpi.openmetadata.frameworks.governanceaction.controls.ActionTargetType;
 import org.odpi.openmetadata.frameworks.openmetadata.refdata.DeployedImplementationType;
 import org.odpi.openmetadata.frameworks.integration.controls.CatalogTargetType;
 
@@ -14,22 +15,38 @@
  * This enables the capability of an integration connector to be correctly matched to the resources and elements
  * that it works with.
  */
-public enum PostgresServerCatalogTarget
+public enum PostgresTarget
 {
-    CATALOG_TARGET("postgreSQLServer",
+    SERVER("postgreSQLServer",
+                   DeployedImplementationType.POSTGRESQL_SERVER.getDescription(),
                    DeployedImplementationType.POSTGRESQL_SERVER.getAssociatedTypeName(),
                    DeployedImplementationType.POSTGRESQL_SERVER.getDeployedImplementationType(),
-                   null);
+                   null),
+
+    /**
+     * PostgreSQL Database.
+     */
+    DATABASE("postgresDatabase",
+             DeployedImplementationType.POSTGRESQL_DATABASE.getDescription(),
+             DeployedImplementationType.POSTGRESQL_DATABASE.getAssociatedTypeName(),
+             DeployedImplementationType.POSTGRESQL_DATABASE.getDeployedImplementationType(),
+             null),
+
+    ;;
 
 
     /**
      * Catalog target name.
      */
     private final String name;
 
+    /**
+     * Description of the target.
+     */
+    public final String description;
 
     /**
-     * The open metadata type name of the element that can be a catalog target.
+     * The open metadata type name of the element that can be a target.
      */
     private final String typeName;
 
@@ -40,7 +57,7 @@ public enum PostgresServerCatalogTarget
     private final String deployedImplementationType;
 
     /**
-     * A map of property name to property value for values that should match in the catalog target for it to be compatible with this integration
+     * A map of property name to property value for values that should match in the target for it to be compatible with this integration
      * connector.
      */
     private final Map<String, String> otherPropertyValues;
@@ -49,22 +66,28 @@ public enum PostgresServerCatalogTarget
     /**
      * Constructor for Enum
      *
-     * @param name catalog target name
+     * @param name target name
+     * @param description description of target
      * @param typeName open metadata type name for the linked element
      * @param deployedImplementationType deployed implementation type for the linked element
      * @param otherPropertyValues other values
      */
-    PostgresServerCatalogTarget(String name, String typeName, String deployedImplementationType, Map<String, String> otherPropertyValues)
+    PostgresTarget(String name,
+                   String description,
+                   String typeName,
+                   String deployedImplementationType,
+                   Map<String, String> otherPropertyValues)
     {
         this.name                       = name;
+        this.description                = description;
         this.typeName                   = typeName;
         this.deployedImplementationType = deployedImplementationType;
         this.otherPropertyValues        = otherPropertyValues;
     }
 
 
     /**
-     * Return the catalog target name.
+     * Return the target name.
      *
      * @return string name
      */
@@ -75,7 +98,18 @@ public String getName()
 
 
     /**
-     * Return the type name (or super type name) of a permitted catalog target.
+     * Return the description of the target.
+     *
+     * @return string description
+     */
+    public String getDescription()
+    {
+        return description;
+    }
+
+
+    /**
+     * Return the type name (or super type name) of a permitted target.
      *
      * @return name of an open metadata type
      */
@@ -86,7 +120,7 @@ public String getTypeName()
 
 
     /**
-     * Return a more specific definition of a permitted catalog target.
+     * Return a more specific definition of a permitted target.
      *
      * @return deployed implementation type name
      */
@@ -97,7 +131,7 @@ public String getDeployedImplementationType()
 
 
     /**
-     * Return a map of property name to property value that the catalog target should have to be valid for this integration connector.
+     * Return a map of property name to property value that the target should have to be valid for this integration connector.
      *
      * @return map of string to string
      */
@@ -110,25 +144,22 @@ public Map<String, String> getOtherPropertyValues()
     /**
      * Return all the catalog types defined by this enum.
      *
-     * @return list of catalog target type
+     * @return list of target type
      */
-    public static List<CatalogTargetType> getCatalogTargetTypes()
+    public static List<CatalogTargetType> getPostgresServerCatalogTargetTypes()
     {
         List<CatalogTargetType> catalogTargetTypes = new ArrayList<>();
 
-        for (PostgresServerCatalogTarget catalogTarget : PostgresServerCatalogTarget.values())
-        {
-            catalogTargetTypes.add(catalogTarget.getCatalogTargetType());
-        }
+        catalogTargetTypes.add(SERVER.getCatalogTargetType());
 
         return catalogTargetTypes;
     }
 
 
     /**
-     * Return the catalog target type for a specific catalog target enum.
+     * Return the target type for a specific target enum.
      *
-     * @return catalog target type
+     * @return target type
      */
     public CatalogTargetType getCatalogTargetType()
     {
@@ -143,6 +174,55 @@ public CatalogTargetType getCatalogTargetType()
     }
 
 
+
+    /**
+     * Return the targets defined in this enum for a PostgreSQL server.
+     *
+     * @return list
+     */
+    public static List<ActionTargetType> getPostgresServerActionTargetTypes()
+    {
+        List<ActionTargetType> actionTargetTypes = new ArrayList<>();
+
+        actionTargetTypes.add(SERVER.getActionTargetType());
+
+        return actionTargetTypes;
+    }
+
+
+    /**
+     * Return the targets defined in this enum for a PostgreSQL database.
+     *
+     * @return list
+     */
+    public static List<ActionTargetType> getPostgresDatabaseActionTargetTypes()
+    {
+        List<ActionTargetType> actionTargetTypes = new ArrayList<>();
+
+        actionTargetTypes.add(DATABASE.getActionTargetType());
+
+        return actionTargetTypes;
+    }
+
+
+    /**
+     * Return an target type for use in the governance service's provider.
+     *
+     * @return target type
+     */
+    public ActionTargetType getActionTargetType()
+    {
+        ActionTargetType actionTargetType = new ActionTargetType();
+
+        actionTargetType.setName(name);
+        actionTargetType.setDescription(description);
+        actionTargetType.setTypeName(typeName);
+        actionTargetType.setDeployedImplementationType(deployedImplementationType);
+
+        return actionTargetType;
+    }
+
+
     /**
      * JSON-style toString
      *

diff --git a/...ctors/postgres/controls/package-info.java → ...ctors/postgres/controls/package-info.java b/...ctors/postgres/controls/package-info.java → ...ctors/postgres/controls/package-info.java
diff --git a/...tors/postgres/ffdc/PostgresAuditCode.java → ...tors/postgres/ffdc/PostgresAuditCode.java b/...tors/postgres/ffdc/PostgresAuditCode.java → ...tors/postgres/ffdc/PostgresAuditCode.java
diff --git a/...tors/postgres/ffdc/PostgresErrorCode.java → ...tors/postgres/ffdc/PostgresErrorCode.java b/...tors/postgres/ffdc/PostgresErrorCode.java → ...tors/postgres/ffdc/PostgresErrorCode.java
diff --git a/...onnectors/postgres/ffdc/package-info.java → ...onnectors/postgres/ffdc/package-info.java b/...onnectors/postgres/ffdc/package-info.java → ...onnectors/postgres/ffdc/package-info.java
diff --git a/...urvey/PostgresDatabaseStatsExtractor.java → ...urvey/PostgresDatabaseStatsExtractor.java b/...urvey/PostgresDatabaseStatsExtractor.java → ...urvey/PostgresDatabaseStatsExtractor.java
@@ -3,6 +3,7 @@
 
 package org.odpi.openmetadata.adapters.connectors.postgres.survey;
 
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresAnnotationType;
 import org.odpi.openmetadata.frameworks.connectors.ffdc.PropertyServerException;
 import org.odpi.openmetadata.frameworks.surveyaction.SurveyActionServiceConnector;
 import org.odpi.openmetadata.frameworks.surveyaction.measurements.RelationalDatabaseMeasurement;

diff --git a/...PostgresDatabaseSurveyActionProvider.java → ...PostgresDatabaseSurveyActionProvider.java b/...PostgresDatabaseSurveyActionProvider.java → ...PostgresDatabaseSurveyActionProvider.java
@@ -3,10 +3,11 @@
 
 package org.odpi.openmetadata.adapters.connectors.postgres.survey;
 
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresAnnotationType;
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresTarget;
 import org.odpi.openmetadata.frameworks.auditlog.AuditLogReportingComponent;
 import org.odpi.openmetadata.frameworks.auditlog.ComponentDevelopmentStatus;
 import org.odpi.openmetadata.frameworks.connectors.properties.beans.ConnectorType;
-import org.odpi.openmetadata.frameworks.openmetadata.refdata.DeployedImplementationType;
 import org.odpi.openmetadata.frameworks.surveyaction.SurveyActionServiceProvider;
 import org.odpi.openmetadata.frameworks.surveyaction.controls.AnalysisStep;
 
@@ -80,7 +81,7 @@ public PostgresDatabaseSurveyActionProvider()
 
         super.setConnectorComponentDescription(componentDescription);
 
-        super.supportedActionTargetTypes = PostgresActionTarget.getPostgresDatabaseActionTargetTypes();
+        super.supportedActionTargetTypes = PostgresTarget.getPostgresDatabaseActionTargetTypes();
         super.supportedAnalysisSteps = AnalysisStep.getAnalysisStepTypes(new AnalysisStep[] {
                 AnalysisStep.CHECK_ASSET, AnalysisStep.PROFILING_ASSOCIATED_RESOURCES});
         super.producedAnnotationTypes    = PostgresAnnotationType.getPostgresDatabaseAnnotationTypeTypes();

diff --git a/.../PostgresDatabaseSurveyActionService.java → .../PostgresDatabaseSurveyActionService.java b/.../PostgresDatabaseSurveyActionService.java → .../PostgresDatabaseSurveyActionService.java
diff --git a/...y/PostgresServerSurveyActionProvider.java → ...y/PostgresServerSurveyActionProvider.java b/...y/PostgresServerSurveyActionProvider.java → ...y/PostgresServerSurveyActionProvider.java
@@ -3,10 +3,11 @@
 
 package org.odpi.openmetadata.adapters.connectors.postgres.survey;
 
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresAnnotationType;
+import org.odpi.openmetadata.adapters.connectors.postgres.controls.PostgresTarget;
 import org.odpi.openmetadata.frameworks.auditlog.AuditLogReportingComponent;
 import org.odpi.openmetadata.frameworks.auditlog.ComponentDevelopmentStatus;
 import org.odpi.openmetadata.frameworks.connectors.properties.beans.ConnectorType;
-import org.odpi.openmetadata.frameworks.openmetadata.refdata.DeployedImplementationType;
 import org.odpi.openmetadata.frameworks.surveyaction.SurveyActionServiceProvider;
 import org.odpi.openmetadata.frameworks.surveyaction.controls.AnalysisStep;
 
@@ -80,7 +81,7 @@ public PostgresServerSurveyActionProvider()
 
         super.setConnectorComponentDescription(componentDescription);
 
-        super.supportedActionTargetTypes = PostgresActionTarget.getPostgresServerActionTargetTypes();
+        super.supportedActionTargetTypes = PostgresTarget.getPostgresServerActionTargetTypes();
         super.supportedAnalysisSteps = AnalysisStep.getAnalysisStepTypes(new AnalysisStep[] {
                 AnalysisStep.CHECK_ASSET, AnalysisStep.PROFILING_ASSOCIATED_RESOURCES});
         super.producedAnnotationTypes    = PostgresAnnotationType.getPostgresServerAnnotationTypeTypes();

diff --git a/...ey/PostgresServerSurveyActionService.java → ...ey/PostgresServerSurveyActionService.java b/...ey/PostgresServerSurveyActionService.java → ...ey/PostgresServerSurveyActionService.java
diff --git a/...ors/postgres/utilities/PostgresUtils.java → ...ors/postgres/utilities/PostgresUtils.java b/...ors/postgres/utilities/PostgresUtils.java → ...ors/postgres/utilities/PostgresUtils.java
diff --git a/...nnectors/postgres/ffdc/AuditCodeTest.java → ...nnectors/postgres/ffdc/AuditCodeTest.java b/...nnectors/postgres/ffdc/AuditCodeTest.java → ...nnectors/postgres/ffdc/AuditCodeTest.java
diff --git a/...nnectors/postgres/ffdc/ErrorCodeTest.java → ...nnectors/postgres/ffdc/ErrorCodeTest.java b/...nnectors/postgres/ffdc/ErrorCodeTest.java → ...nnectors/postgres/ffdc/ErrorCodeTest.java
diff --git a/...ters/open-connectors/data-manager-connectors/unity-catalog-connectors/README.md b/...ters/open-connectors/data-manager-connectors/unity-catalog-connectors/README.md
@@ -0,0 +1,12 @@
+<!-- SPDX-License-Identifier: CC-BY-4.0 -->
+<!-- Copyright Contributors to the Egeria project. -->
+
+
+# Unity Catalog Connectors
+
+The connectors in this module support interaction with the open source unity catalog.  
+
+See [https://github.com/unitycatalog/unitycatalog](https://github.com/unitycatalog/unitycatalog).
+
+Unity Catalog is an operational metadata catalog that supports controlled access to data managed through a data 
+platform.  It provides metadata to describe the organization of the data.  This can be used to overlay a security model to control access.