diff --git a/API.attributename.md b/API.attributename.md
index 949e5a6..5fba52c 100644
--- a/API.attributename.md
+++ b/API.attributename.md
@@ -41,6 +41,10 @@ Deletes an attribute name for the user's selected company.
 
 `Promise<void>`
 
+**Throws**
+
+`Error` — If attribute name not found or in use.
+
 ## `attributename.list`
 
 *Source: `src/store/attributename/list.js`*
diff --git a/API.attributevalue.md b/API.attributevalue.md
index 6fb0f37..3df3164 100644
--- a/API.attributevalue.md
+++ b/API.attributevalue.md
@@ -41,6 +41,10 @@ Deletes an attribute value.
 
 `Promise<void>`
 
+**Throws**
+
+`Error` — If attribute value not found or in use.
+
 ## `attributevalue.listByAttributeId`
 
 *Source: `src/store/attributevalue/listByAttributeId.js`*
diff --git a/API.propertyname.md b/API.propertyname.md
index 2235771..498555e 100644
--- a/API.propertyname.md
+++ b/API.propertyname.md
@@ -41,6 +41,10 @@ Deletes a property name for the user's selected company.
 
 `Promise<void>`
 
+**Throws**
+
+`Error` — If property name not found or in use.
+
 ## `propertyname.list`
 
 *Source: `src/store/propertyname/list.js`*
diff --git a/package.json b/package.json
index 57328f9..583a486 100644
--- a/package.json
+++ b/package.json
@@ -25,9 +25,9 @@
   },
   "dependencies": {
     "@clack/prompts": "^1.8.1",
-    "@hpcc-js/wasm-graphviz": "^1.29.1",
+    "@hpcc-js/wasm-graphviz": "^1.29.2",
     "chalk": "^6.0.1",
-    "dotenv": "^18.0.4",
+    "dotenv": "^18.0.5",
     "pdfconvert-wasm": "^0.3.0",
     "sharp": "^0.35.5",
     "thumbhash": "^0.1.1"
diff --git a/src/providers/mssql/queries/article.js b/src/providers/mssql/queries/article.js
index b4d2368..963fe68 100644
--- a/src/providers/mssql/queries/article.js
+++ b/src/providers/mssql/queries/article.js
@@ -32,6 +32,7 @@ export const ARTICLE_LIST_COLUMNS = `
     pr.net,
     t.rate AS taxRate,
     a.track_stock,
+    a.is_father AS isFather,
     CASE
         WHEN a.optionslist_id IS NOT NULL THEN (
             SELECT COUNT(*)
diff --git a/src/providers/mssql/schema.js b/src/providers/mssql/schema.js
index 63cdb94..e2aa9be 100644
--- a/src/providers/mssql/schema.js
+++ b/src/providers/mssql/schema.js
@@ -1029,7 +1029,7 @@ BEGIN
         value NVARCHAR(MAX) NOT NULL,
         sort INT NOT NULL CONSTRAINT DF_articleproperty_sort DEFAULT 0,
         CONSTRAINT FK_articleproperty_article FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
-        CONSTRAINT FK_articleproperty_property FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE CASCADE
+        CONSTRAINT FK_articleproperty_property FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE NO ACTION
     );
 END
 `;
@@ -1072,7 +1072,7 @@ BEGIN
         attributevalue_id INT NOT NULL,
         sort INT NOT NULL CONSTRAINT DF_articleattributevalue_sort DEFAULT 0,
         CONSTRAINT FK_articleattributevalue_article FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
-        CONSTRAINT FK_articleattributevalue_attributevalue FOREIGN KEY (attributevalue_id) REFERENCES attributevalue(id) ON DELETE CASCADE,
+        CONSTRAINT FK_articleattributevalue_attributevalue FOREIGN KEY (attributevalue_id) REFERENCES attributevalue(id) ON DELETE NO ACTION,
         CONSTRAINT UQ_articleattributevalue_article_attributevalue UNIQUE (article_id, attributevalue_id)
     );
 END
@@ -1088,7 +1088,7 @@ BEGIN
         value NVARCHAR(MAX) NOT NULL,
         sort INT NOT NULL CONSTRAINT DF_categoryproperty_sort DEFAULT 0,
         CONSTRAINT FK_categoryproperty_category FOREIGN KEY (category_id) REFERENCES category(id) ON DELETE CASCADE,
-        CONSTRAINT FK_categoryproperty_property FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE CASCADE
+        CONSTRAINT FK_categoryproperty_property FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE NO ACTION
     );
 END
 `;
diff --git a/src/providers/sqlite3/schema.js b/src/providers/sqlite3/schema.js
index 2fe56c1..00bba19 100644
--- a/src/providers/sqlite3/schema.js
+++ b/src/providers/sqlite3/schema.js
@@ -716,7 +716,7 @@ CREATE TABLE IF NOT EXISTS articleproperty (
     value TEXT NOT NULL,
     sort INTEGER NOT NULL DEFAULT 0,
     FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
-    FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE CASCADE
+    FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE NO ACTION
 );
 `;
 
@@ -750,7 +750,7 @@ CREATE TABLE IF NOT EXISTS articleattributevalue (
     attributevalue_id INTEGER NOT NULL,
     sort INTEGER NOT NULL DEFAULT 0,
     FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
-    FOREIGN KEY (attributevalue_id) REFERENCES attributevalue(id) ON DELETE CASCADE,
+    FOREIGN KEY (attributevalue_id) REFERENCES attributevalue(id) ON DELETE NO ACTION,
     UNIQUE (article_id, attributevalue_id)
 );
 `;
@@ -763,7 +763,7 @@ CREATE TABLE IF NOT EXISTS categoryproperty (
     value TEXT NOT NULL,
     sort INTEGER NOT NULL DEFAULT 0,
     FOREIGN KEY (category_id) REFERENCES category(id) ON DELETE CASCADE,
-    FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE CASCADE
+    FOREIGN KEY (property_id) REFERENCES propertyname(id) ON DELETE NO ACTION
 );
 `;
 
diff --git a/src/store/attributename/delete.js b/src/store/attributename/delete.js
index 9278430..301c5da 100644
--- a/src/store/attributename/delete.js
+++ b/src/store/attributename/delete.js
@@ -6,6 +6,7 @@ import {
   GET_BY_COMPANY_AND_ID as SQLITE_GET,
   DELETE_BY_COMPANY_AND_ID as SQLITE_DELETE,
 } from '../../providers/sqlite3/queries/attributename.js';
+import { isForeignKeyConstraintError } from '../../providers/provider.js';
 import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
 import makeRunner from '../runner.js';
 
@@ -22,6 +23,7 @@ export default function deleteAttributename(provider) {
    * @param {number} id - The attribute name id.
    * @param {object} [tx] - Optional transaction.
    * @returns {Promise<void>}
+   * @throws {Error} If attribute name not found or in use.
    */
   return async (googleAuthId, id, tx) => {
     const runner = makeRunner(provider, tx);
@@ -32,6 +34,13 @@ export default function deleteAttributename(provider) {
       throw new Error('Attribute name not found');
     }
 
-    await runner.query(deleteSql, { id, companyId });
+    try {
+      await runner.query(deleteSql, { id, companyId });
+    } catch (err) {
+      if (isForeignKeyConstraintError(err)) {
+        throw new Error('Attribute name in use');
+      }
+      throw err;
+    }
   };
 }
diff --git a/src/store/attributevalue/delete.js b/src/store/attributevalue/delete.js
index a3206e2..6d8b631 100644
--- a/src/store/attributevalue/delete.js
+++ b/src/store/attributevalue/delete.js
@@ -6,6 +6,7 @@ import {
   GET_BY_ID_AND_COMPANY as SQLITE_GET,
   DELETE_BY_ID as SQLITE_DELETE,
 } from '../../providers/sqlite3/queries/attributevalue.js';
+import { isForeignKeyConstraintError } from '../../providers/provider.js';
 import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
 import makeRunner from '../runner.js';
 
@@ -22,6 +23,7 @@ export default function deleteAttributeValue(provider) {
    * @param {number} id - The attribute value id.
    * @param {object} [tx] - Optional transaction.
    * @returns {Promise<void>}
+   * @throws {Error} If attribute value not found or in use.
    */
   return async (googleAuthId, id, tx) => {
     const valId = Number(id);
@@ -37,6 +39,13 @@ export default function deleteAttributeValue(provider) {
       throw new Error('Attribute value not found');
     }
 
-    await runner.query(deleteSql, { id: valId });
+    try {
+      await runner.query(deleteSql, { id: valId });
+    } catch (err) {
+      if (isForeignKeyConstraintError(err)) {
+        throw new Error('Attribute value in use');
+      }
+      throw err;
+    }
   };
 }
diff --git a/src/store/propertyname/delete.js b/src/store/propertyname/delete.js
index f5417ba..d0ad7e6 100644
--- a/src/store/propertyname/delete.js
+++ b/src/store/propertyname/delete.js
@@ -6,6 +6,7 @@ import {
   GET_BY_COMPANY_AND_ID as SQLITE_GET,
   DELETE_BY_COMPANY_AND_ID as SQLITE_DELETE,
 } from '../../providers/sqlite3/queries/propertyname.js';
+import { isForeignKeyConstraintError } from '../../providers/provider.js';
 import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
 import makeRunner from '../runner.js';
 
@@ -22,6 +23,7 @@ export default function deletePropertyname(provider) {
    * @param {number} id - The property name id.
    * @param {object} [tx] - Optional transaction.
    * @returns {Promise<void>}
+   * @throws {Error} If property name not found or in use.
    */
   return async (googleAuthId, id, tx) => {
     const runner = makeRunner(provider, tx);
@@ -32,6 +34,13 @@ export default function deletePropertyname(provider) {
       throw new Error('Property name not found');
     }
 
-    await runner.query(deleteSql, { id, companyId });
+    try {
+      await runner.query(deleteSql, { id, companyId });
+    } catch (err) {
+      if (isForeignKeyConstraintError(err)) {
+        throw new Error('Property name in use');
+      }
+      throw err;
+    }
   };
 }