diff --git a/package.json b/package.json
index f5afdfa..4af1202 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "data",
-  "version": "0.0.27",
+  "version": "0.0.28",
   "scripts": {
     "ng": "ng",
     "start": "ng serve",
diff --git a/projects/poweredsoft/data/src/lib/models.ts b/projects/poweredsoft/data/src/lib/models.ts
index 4186367..6ea7f6a 100644
--- a/projects/poweredsoft/data/src/lib/models.ts
+++ b/projects/poweredsoft/data/src/lib/models.ts
@@ -64,4 +64,32 @@ export interface IAggregateResult {
 
 export interface ICompositeFilter extends IFilter {
     filters: IFilter[];
+}
+
+export enum AggregateType {
+    COUNT = 'Count',
+    SUM = 'Sum',
+    AVG = 'Avg',
+    LONGCOUNT = 'LongCount',
+    MIN = 'Min',
+    MAX = 'Max',
+    FIRST = 'First',
+    FIRSTORDEFAULT = 'FirstOrDefault',
+    LAST = 'Last',
+    LASTORDEFAULT = 'LastOrDefault'
+}
+
+export enum FilterType {
+    EQUAL = 'Equal',
+    CONTAINS = 'Contains',
+    STARTSWITH = 'StartsWith',
+    ENDSWITH = 'EndsWith',
+    COMPOSITE = 'Composite',
+    NOTEQUAL = 'NotEqual',
+    GREATERTHAN = 'GreaterThan',
+    LESSTHANOREQUAL = 'LessThanOrEqual', 
+    GREATERTHANOREQUAL = 'GreaterThanOrEqual',
+    LESSTHAN ='LessThan',
+    IN = 'In',
+    NOTIN = 'NotIn'
 }
\ No newline at end of file