1# applications_contactsdata<a name="ZH-CN_TOPIC_0000001122925147"></a> 2 3- [Introduction](#section1166054159366) 4- [Image architecture](#section1619419895966) 5- [Directory Structure](#section161941989596) 6- [Repositories Involved](#section1371113476307) 7 8## Introduction<a name="section1166054159366"></a> 9 10The contact database application is an indispensable information management applicationS for every user to manage the contact database. 11Its content is very important for user managers, so the contact database should be able to provide sufficient information and quick 12query means for each user's management, which greatly helps users to reasonably manage the contact database information. 13 14## Image architecture<a name="section1619419895966"></a> 15 16 17 18## Directory Structure<a name="section161941989596"></a> 19 20``` 21/foundation/contactsdataability/ 22├── ability 23│ ├── account #Account Management 24│ ├── common #Public Methods 25│ ├── datadisasterrecovery #Data Corruption Recovery 26│ ├── merge #Contacts Merge 27│ └── sinicization #Chinese Characters to Pinyin Related 28├── contacts #NAPI 29├── dataBusiness 30│ ├── calllog #Call Records 31│ ├── contacts #Contacts Person 32│ ├── quicksearch #Quick Search 33│ └── voicemail #Voicemail 34├── test #Test Catalog 35├── BUILD.gn 36└── ohos.build 37``` 38 39## Repositories Involved<a name="section1371113476307"></a> 40 41system applications 42 43applications_contactsdata
