Why do data lookups fail in the tracking of data using SQLite and EF6 Core?

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There could be several reasons why data lookups fail in tracking data using SQLite and EF6 Core. Some possible reasons are:

1. Incorrect database connection string: If the connection string used in the application is incorrect, the application won't be able to establish a connection to the database and, hence, won't be able to fetch any data.

2. Incorrect table or column names: If the table or column names used in the application do not match the actual table or column names in the database, the application won't be able to fetch the required data.

3. Missing data: If the data being searched for is not present in the database, the data lookup will fail to return any results.

4. Inconsistent data types: If the data types of the columns used in the application do not match the data types of the corresponding columns in the database, the data lookup may fail or return incorrect results.

5. Improper use of EF6 Core APIs: If the developer is not familiar with the APIs provided by EF6 Core and makes incorrect or incomplete use of them, the data lookup may fail to return the expected results.

6. Issues with SQLite version: There might be some compatibility issues between the application and SQLite version being used, which can cause data lookup failures.