diff --git a/libsearch/appdata/app-db-manager.cpp b/libsearch/appdata/app-db-manager.cpp
new file mode 100644
index 0000000..d37a053
--- /dev/null
+++ b/libsearch/appdata/app-db-manager.cpp
@@ -0,0 +1,40 @@
+#include "app-db-manager.h"
+#include <QDir>
+#include <QSqlError>
+#include <QSqlQuery>
+#include <QDebug>
+#include <QApplication>
+using namespace UkuiSearch;
+#define APP_DATABASE_PATH QDir::homePath()+"/.config/org.ukui/ukui-search/appdata/"+"app-info.db"
+#define CONNECTION_NAME QLatin1String("ukss-appdb-connection")
+static AppDBManager *global_instance = nullptr;
+AppDBManager *AppDBManager::getInstance()
+{
+    if (!global_instance) {
+        global_instance = new AppDBManager();
+    }
+    return global_instance;
+}
+AppDBManager::AppDBManager(QObject *parent) : QObject(parent), m_database(QSqlDatabase::addDatabase("QSQLITE",CONNECTION_NAME))
+{
+}
+
+AppDBManager::~AppDBManager()
+{
+
+}
+void AppDBManager::initDateBaseConnection()
+{
+    if(!m_database->isValid()) {
+        qWarning() << m_database->lastError();
+        QApplication::quit();
+    }
+    m_database->setDatabaseName(APP_DATABASE_PATH);
+    if(!m_database->open()) {
+        qWarning() << m_database->lastError();
+        QApplication::quit();
+    }
+    //todo: 建表
+}
+
+
diff --git a/libsearch/appdata/app-db-manager.h b/libsearch/appdata/app-db-manager.h
new file mode 100644
index 0000000..a5076b3
--- /dev/null
+++ b/libsearch/appdata/app-db-manager.h
@@ -0,0 +1,27 @@
+#ifndef APPDBMANAGER_H
+#define APPDBMANAGER_H
+
+#include <QObject>
+#include <QSqlDatabase>
+namespace UkuiSearch {
+/**
+ * @brief The AppDBManager class
+ * 功能：1.遍历并且监听desktop文件目录，建立并且维护应用信息数据库。
+ *      2.监听应用安装，打开事件，收藏等事件，更新数据库
+ */
+
+class AppDBManager : public QObject
+{
+    Q_OBJECT
+public:
+    static AppDBManager *getInstance();
+    void initDateBaseConnection();
+private:
+    explicit AppDBManager(QObject *parent = nullptr);
+    ~AppDBManager();
+    QSqlDatabase *m_database = nullptr;
+
+};
+}
+
+#endif // APPDBMANAGER_H
diff --git a/libsearch/appdata/app-info-table-private.h b/libsearch/appdata/app-info-table-private.h
new file mode 100644
index 0000000..e4b7ba8
--- /dev/null
+++ b/libsearch/appdata/app-info-table-private.h
@@ -0,0 +1,21 @@
+#ifndef APPINFOTABLEPRIVATE_H
+#define APPINFOTABLEPRIVATE_H
+#include <QObject>
+#include <app-info-table.h>
+namespace UkuiSearch {
+class AppInfoTablePrivate : public QObject
+{
+    Q_OBJECT
+public:
+    explicit AppInfoTablePrivate(AppInfoTable *parent = nullptr);
+    AppInfoTablePrivate(AppInfoTablePrivate &) = delete;
+    AppInfoTablePrivate &operator =(const AppInfoTablePrivate &) = delete;
+
+private:
+    AppInfoTable *q;
+
+};
+
+
+}
+#endif // APPINFOTABLEPRIVATE_H
diff --git a/libsearch/appdata/app-info-table.cpp b/libsearch/appdata/app-info-table.cpp
new file mode 100644
index 0000000..dfe2356
--- /dev/null
+++ b/libsearch/appdata/app-info-table.cpp
@@ -0,0 +1,10 @@
+#include "app-info-table.h"
+#include "app-info-table-private.h"
+using namespace UkuiSearch;
+AppInfoTablePrivate::AppInfoTablePrivate(AppInfoTable *parent) : QObject(parent), q(parent)
+{
+}
+
+AppInfoTable::AppInfoTable(QObject *parent) : QObject(parent), d(new AppInfoTablePrivate(this))
+{
+}
diff --git a/libsearch/appdata/app-info-table.h b/libsearch/appdata/app-info-table.h
new file mode 100644
index 0000000..c177700
--- /dev/null
+++ b/libsearch/appdata/app-info-table.h
@@ -0,0 +1,35 @@
+#ifndef APPINFOTABLE_H
+#define APPINFOTABLE_H
+
+#include <QObject>
+namespace UkuiSearch {
+class AppInfoTablePrivate;
+/**
+ * @brief The AppInfoTable class
+ * TODO:提供查询接口（待定），包括：
+ * 1.查询全部已安装应用信息（图标，名称，分类等），并且根据系统语言切换
+ * 2.查询收藏应用信息
+ * 3.查询置顶顺序信息
+ * 4.收藏顺序修改
+ * 5.置顶顺序修改
+ * 6.添加到桌面快捷方式
+ * 7.固定到任务栏快捷方式
+ * 8.应用启动
+ * 9.应用卸载
+ * 注意事项：修改接口实现时注意事务操作
+ */
+class AppInfoTable : public QObject
+{
+    Q_OBJECT
+public:
+    explicit AppInfoTable(QObject *parent = nullptr);
+    AppInfoTable(AppInfoTable &) = delete;
+    AppInfoTable &operator =(const AppInfoTable &) = delete;
+
+private:
+    AppInfoTablePrivate *d;
+
+};
+}
+
+#endif // APPINFOTABLE_H
diff --git a/libsearch/appdata/appdata.pri b/libsearch/appdata/appdata.pri
index 6c7eb7d..c6b5e43 100644
--- a/libsearch/appdata/appdata.pri
+++ b/libsearch/appdata/appdata.pri
@@ -1,6 +1,11 @@
 INCLUDEPATH += $$PWD
 
 HEADERS += \
+    $$PWD/app-db-manager.h \
+    $$PWD/app-info-table-private.h \
+    $$PWD/app-info-table.h
 
-SOURCES += \
+SOURCES += \ \
+    $$PWD/app-db-manager.cpp \
+    $$PWD/app-info-table.cpp
 
diff --git a/libsearch/file-utils.h b/libsearch/file-utils.h
index 1d7e6ce..0dc6393 100644
--- a/libsearch/file-utils.h
+++ b/libsearch/file-utils.h
@@ -40,14 +40,14 @@
 #include <QFontMetrics>
 #include <QLabel>
 
-#include <quazip/quazipfile.h>
+#include <quazip5/quazipfile.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#include <quazip/quazip.h>
+#include <quazip5/quazip.h>
 #include <uchardet/uchardet.h>
 //#include <poppler-qt5.h>
 #include <poppler/qt5/poppler-qt5.h>
diff --git a/libsearch/libsearch.pro b/libsearch/libsearch.pro
index 064a772..da08517 100644
--- a/libsearch/libsearch.pro
+++ b/libsearch/libsearch.pro
@@ -1,4 +1,4 @@
-QT += core xml widgets dbus concurrent
+QT += core xml widgets dbus concurrent sql
 VERSION = 1.0.0
 DEFINES += VERSION='\\"$${VERSION}\\"'