diff --git a/extensions/ql-vscode/CHANGELOG.md b/extensions/ql-vscode/CHANGELOG.md
index 48554b65078..778c5fbe013 100644
--- a/extensions/ql-vscode/CHANGELOG.md
+++ b/extensions/ql-vscode/CHANGELOG.md
@@ -9,6 +9,7 @@
 - Add support for the `telemetry.telemetryLevel` setting. For more information, see the [telemetry documentation](https://codeql.github.com/docs/codeql-for-visual-studio-code/about-telemetry-in-codeql-for-visual-studio-code). [#2824](https://github.com/github/vscode-codeql/pull/2824).
 - Fix syntax highlighting directly after import statements with instantiation arguments. [#2792](https://github.com/github/vscode-codeql/pull/2792)
 - The `debug.saveBeforeStart` setting is now respected when running variant analyses. [#2950](https://github.com/github/vscode-codeql/pull/2950)
+- The 'open database' button of the model editor was renamed to 'open source'. Also, it's now only available if the source archive is available as a workspace folder. [#2945](https://github.com/github/vscode-codeql/pull/2945)
 
 ## 1.9.1 - 29 September 2023
 
diff --git a/extensions/ql-vscode/src/databases/local-databases/database-item-impl.ts b/extensions/ql-vscode/src/databases/local-databases/database-item-impl.ts
index 43d597ef288..c802f65ea84 100644
--- a/extensions/ql-vscode/src/databases/local-databases/database-item-impl.ts
+++ b/extensions/ql-vscode/src/databases/local-databases/database-item-impl.ts
@@ -167,6 +167,15 @@ export class DatabaseItemImpl implements DatabaseItem {
     return encodeArchiveBasePath(sourceArchive.fsPath);
   }
 
+  /**
+   * Returns true if the database's source archive is in the workspace.
+   */
+  public hasSourceArchiveInExplorer(): boolean {
+    return (vscode.workspace.workspaceFolders || []).some((folder) =>
+      this.belongsToSourceArchiveExplorerUri(folder.uri),
+    );
+  }
+
   public verifyZippedSources(): string | undefined {
     const sourceArchive = this.sourceArchive;
     if (sourceArchive === undefined) {
diff --git a/extensions/ql-vscode/src/databases/local-databases/database-item.ts b/extensions/ql-vscode/src/databases/local-databases/database-item.ts
index 1794d8e753d..ad64f52d43b 100644
--- a/extensions/ql-vscode/src/databases/local-databases/database-item.ts
+++ b/extensions/ql-vscode/src/databases/local-databases/database-item.ts
@@ -56,6 +56,11 @@ export interface DatabaseItem {
    */
   getSourceArchiveExplorerUri(): vscode.Uri;
 
+  /**
+   * Returns true if the database's source archive is in the workspace.
+   */
+  hasSourceArchiveInExplorer(): boolean;
+
   /**
    * Holds if `uri` belongs to this database's source archive.
    */
diff --git a/extensions/ql-vscode/src/model-editor/model-editor-view.ts b/extensions/ql-vscode/src/model-editor/model-editor-view.ts
index a39f0498056..31ea96d558e 100644
--- a/extensions/ql-vscode/src/model-editor/model-editor-view.ts
+++ b/extensions/ql-vscode/src/model-editor/model-editor-view.ts
@@ -362,6 +362,9 @@ export class ModelEditorView extends AbstractWebview<
     const showLlmButton =
       this.databaseItem.language === "java" && this.modelConfig.llmGeneration;
 
+    const sourceArchiveAvailable =
+      this.databaseItem.hasSourceArchiveInExplorer();
+
     await this.postMessage({
       t: "setModelEditorViewState",
       viewState: {
@@ -370,6 +373,7 @@ export class ModelEditorView extends AbstractWebview<
         showLlmButton,
         showMultipleModels: this.modelConfig.showMultipleModels,
         mode: this.mode,
+        sourceArchiveAvailable,
       },
     });
   }
diff --git a/extensions/ql-vscode/src/model-editor/shared/view-state.ts b/extensions/ql-vscode/src/model-editor/shared/view-state.ts
index f7250916b61..acaf8cd172b 100644
--- a/extensions/ql-vscode/src/model-editor/shared/view-state.ts
+++ b/extensions/ql-vscode/src/model-editor/shared/view-state.ts
@@ -7,6 +7,7 @@ export interface ModelEditorViewState {
   showLlmButton: boolean;
   showMultipleModels: boolean;
   mode: Mode;
+  sourceArchiveAvailable: boolean;
 }
 
 export interface MethodModelingPanelViewState {
diff --git a/extensions/ql-vscode/src/stories/model-editor/LibraryRow.stories.tsx b/extensions/ql-vscode/src/stories/model-editor/LibraryRow.stories.tsx
index 349312d4ee8..d19e0f70b7a 100644
--- a/extensions/ql-vscode/src/stories/model-editor/LibraryRow.stories.tsx
+++ b/extensions/ql-vscode/src/stories/model-editor/LibraryRow.stories.tsx
@@ -226,6 +226,7 @@ LibraryRow.args = {
     showLlmButton: true,
     showMultipleModels: true,
     mode: Mode.Application,
+    sourceArchiveAvailable: true,
   },
   hideModeledMethods: false,
 };
diff --git a/extensions/ql-vscode/src/stories/model-editor/MethodRow.stories.tsx b/extensions/ql-vscode/src/stories/model-editor/MethodRow.stories.tsx
index 9ea43028a21..20a9600cacd 100644
--- a/extensions/ql-vscode/src/stories/model-editor/MethodRow.stories.tsx
+++ b/extensions/ql-vscode/src/stories/model-editor/MethodRow.stories.tsx
@@ -75,6 +75,7 @@ const viewState: ModelEditorViewState = {
   showLlmButton: true,
   showMultipleModels: true,
   mode: Mode.Application,
+  sourceArchiveAvailable: true,
 };
 
 export const Unmodeled = Template.bind({});
diff --git a/extensions/ql-vscode/src/stories/model-editor/ModelEditor.stories.tsx b/extensions/ql-vscode/src/stories/model-editor/ModelEditor.stories.tsx
index 396d09a88eb..92988cb66b4 100644
--- a/extensions/ql-vscode/src/stories/model-editor/ModelEditor.stories.tsx
+++ b/extensions/ql-vscode/src/stories/model-editor/ModelEditor.stories.tsx
@@ -32,6 +32,7 @@ ModelEditor.args = {
     showLlmButton: true,
     showMultipleModels: true,
     mode: Mode.Application,
+    sourceArchiveAvailable: true,
   },
   initialMethods: [
     {
diff --git a/extensions/ql-vscode/src/view/model-editor/ModelEditor.tsx b/extensions/ql-vscode/src/view/model-editor/ModelEditor.tsx
index 413b00a5cbd..5da079fe294 100644
--- a/extensions/ql-vscode/src/view/model-editor/ModelEditor.tsx
+++ b/extensions/ql-vscode/src/view/model-editor/ModelEditor.tsx
@@ -282,10 +282,12 @@ export function ModelEditor({
             <>{viewState.extensionPack.name}</>
           </HeaderRow>
           <HeaderRow>
-            <LinkIconButton onClick={onOpenDatabaseClick}>
-              <span slot="start" className="codicon codicon-package"></span>
-              Open database
-            </LinkIconButton>
+            {viewState.sourceArchiveAvailable && (
+              <LinkIconButton onClick={onOpenDatabaseClick}>
+                <span slot="start" className="codicon codicon-package"></span>
+                Open source
+              </LinkIconButton>
+            )}
             <LinkIconButton onClick={onOpenExtensionPackClick}>
               <span slot="start" className="codicon codicon-package"></span>
               Open extension pack
diff --git a/extensions/ql-vscode/src/view/model-editor/__tests__/LibraryRow.spec.tsx b/extensions/ql-vscode/src/view/model-editor/__tests__/LibraryRow.spec.tsx
index 77f14c5fd8e..57c8d05e99e 100644
--- a/extensions/ql-vscode/src/view/model-editor/__tests__/LibraryRow.spec.tsx
+++ b/extensions/ql-vscode/src/view/model-editor/__tests__/LibraryRow.spec.tsx
@@ -22,6 +22,7 @@ describe(LibraryRow.name, () => {
     showLlmButton: false,
     showMultipleModels: false,
     extensionPack: createMockExtensionPack(),
+    sourceArchiveAvailable: true,
   };
 
   const render = (props: Partial<LibraryRowProps> = {}) =>
diff --git a/extensions/ql-vscode/src/view/model-editor/__tests__/MethodRow.spec.tsx b/extensions/ql-vscode/src/view/model-editor/__tests__/MethodRow.spec.tsx
index 4f34ab1e7a2..36ac71aa01f 100644
--- a/extensions/ql-vscode/src/view/model-editor/__tests__/MethodRow.spec.tsx
+++ b/extensions/ql-vscode/src/view/model-editor/__tests__/MethodRow.spec.tsx
@@ -39,6 +39,7 @@ describe(MethodRow.name, () => {
     showLlmButton: false,
     showMultipleModels: false,
     extensionPack: createMockExtensionPack(),
+    sourceArchiveAvailable: true,
   };
 
   const render = (props: Partial<MethodRowProps> = {}) =>
diff --git a/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodDataGrid.spec.tsx b/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodDataGrid.spec.tsx
index 8320036a2d9..cacb548349f 100644
--- a/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodDataGrid.spec.tsx
+++ b/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodDataGrid.spec.tsx
@@ -49,6 +49,7 @@ describe(ModeledMethodDataGrid.name, () => {
     showLlmButton: false,
     showMultipleModels: false,
     extensionPack: createMockExtensionPack(),
+    sourceArchiveAvailable: true,
   };
 
   const render = (props: Partial<ModeledMethodDataGridProps> = {}) =>
diff --git a/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodsList.spec.tsx b/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodsList.spec.tsx
index 07c18b57b7d..a22ba545f52 100644
--- a/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodsList.spec.tsx
+++ b/extensions/ql-vscode/src/view/model-editor/__tests__/ModeledMethodsList.spec.tsx
@@ -50,6 +50,7 @@ describe(ModeledMethodsList.name, () => {
     showLlmButton: false,
     showMultipleModels: false,
     extensionPack: createMockExtensionPack(),
+    sourceArchiveAvailable: true,
   };
 
   const render = (props: Partial<ModeledMethodsListProps> = {}) =>