PII_type: EMAIL

Exploration_sql: Based on the schema of the available tables, there are no columns that directly indicate the presence of email addresses. It seems that the tables 'android_metadata' and 'searchengine' do not contain email addresses. If you have any other tables in mind that may contain email addresses, please provide the table names for further investigation.

PII_Prompt: a unique identifier for a destination to which electronic mail (email) can be sent and received over the internet; examples include jane.doe@example.com, john.smith@provider.net, dev-team@startup.io, and user.name+label@domain.org


PII_type: PHONE

Exploration_sql: Based on the schema of the available tables, there are no columns that directly indicate messages, chats, or other text fields where US phone numbers might be stored. Therefore, it is not possible to search for US phone numbers in the current databases.


PII_type: USERNAME

Exploration_sql:
Based on the schema of the tables, we will search for possible usernames in the following columns using REGEXP pattern matching:
- android_metadata: locale
- searchengine: title, url, image_url

Here is the SQL query:
```sql
SELECT locale AS possible_username FROM android_metadata WHERE locale REGEXP '\\b[a-zA-Z][a-zA-Z0-9._-]{2,51}\\b'
UNION ALL
SELECT title AS possible_username FROM searchengine WHERE title REGEXP '\\b[a-zA-Z][a-zA-Z0-9._-]{2,51}\\b'
UNION ALL
SELECT url AS possible_username FROM searchengine WHERE url REGEXP '\\b[a-zA-Z][a-zA-Z0-9._-]{2,51}\\b'
UNION ALL
SELECT image_url AS possible_username FROM searchengine WHERE image_url REGEXP '\\b[a-zA-Z][a-zA-Z0-9._-]{2,51}\\b'

PII_Prompt: a username is a short textual identifier chosen by a user to represent their account or public handle within an application or service it is stored as plain text contains no whitespace does not include a domain component and is intended for human recognition rather than internal system uniqueness


Exploration_sql:
Based on the schema of the available tables, there are no columns that directly indicate person names. To further explore the database for person names, we can focus on text fields such as 'title', 'url', 'extra1', 'extra2', and 'extra3' in the 'searchengine' table. Let's search these columns for possible person names.

```sql
SELECT title FROM searchengine WHERE title REGEXP '[A-Za-z][A-Za-z\s\.\-]{1,50}'
UNION ALL
SELECT url FROM searchengine WHERE url REGEXP '[A-Za-z][A-Za-z\s\.\-]{1,50}'
UNION ALL
SELECT extra1 FROM searchengine WHERE extra1 REGEXP '[A-Za-z][A-Za-z\s\.\-]{1,50}'
UNION ALL
SELECT extra2 FROM searchengine WHERE extra2 REGEXP '[A-Za-z][A-Za-z\s\.\-]{1,50}'
UNION ALL
SELECT extra3 FROM searchengine WHERE extra3 REGEXP '[A-Za-z][A-Za-z\s\.\-]{1,50}'

PII_Prompt: a loosely structured human name-like strings that typically consist of a first name, a first name and a last name, and may also include middle names, initials, prefixes (e.g., Mr., Dr.), and suffixes (e.g., Jr., Sr.)


Exploration_sql: Based on the schema of the available tables, there are no columns that directly indicate the presence of US postal addresses. If you have any specific tables or columns in mind where you suspect the addresses might be stored, please provide that information for further analysis.

PII_Prompt: a US postal address is a street-level mailing location in the United States, commonly appearing as a street name and suffix (e.g., 'Market St') optionally with a street number (e.g., '1500 Market St'), unit, city/state, ZIP, or a PO Box (e.g., 'P.O. Box 123')