diff --git a/lib/ops/entries-store-ops.js b/lib/ops/entries-store-ops.js
new file mode 100644
--- /dev/null
+++ b/lib/ops/entries-store-ops.js
@@ -0,0 +1,40 @@
+// @flow
+
+import type { RawEntryInfo } from '../types/entry-types.js';
+
+export type ReplaceEntryOperation = {
+  +type: 'replace_entry',
+  +payload: {
+    +id: string,
+    +entry: RawEntryInfo,
+  },
+};
+
+export type RemoveEntriesOperation = {
+  +type: 'remove_entries',
+  +payload: { +ids: $ReadOnlyArray<string> },
+};
+
+export type RemoveAllEntriesOperation = {
+  +type: 'remove_all_entries',
+};
+
+export type EntryStoreOperation =
+  | ReplaceEntryOperation
+  | RemoveEntriesOperation
+  | RemoveAllEntriesOperation;
+
+export type ClientDBEntryInfo = {
+  +id: string,
+  +entryInfo: string,
+};
+
+export type ClientDBReplaceEntryOperation = {
+  +type: 'replace_entry',
+  +payload: ClientDBEntryInfo,
+};
+
+export type ClientDBEntryStoreOperation =
+  | ClientDBReplaceEntryOperation
+  | RemoveEntriesOperation
+  | RemoveAllEntriesOperation;