How To Use SQLITE3 Connection in Python Tkinter App to Use Internal Storage скачать в хорошем качестве

How To Use SQLITE3 Connection in Python Tkinter App to Use Internal Storage

#python #sqlite #database SQLite is a C library that provides a lightweight disk-based database that doesn't require a separate server process and allows accessing the database using a nonstandard variant of the SQL query language. Some applications can use SQLite for internal data storage. https://www.sqlite.org/docs.html A tree data structure is an algorithm for placing and locating files (called records or keys) in a database. The algorithm finds data by repeatedly making choices at decision points called nodes. A node can have as few as two branches (also called children) or as many as several dozen. https://www.sqlite.org/rtree.html The FETCH statement retrieves rows of data from the result set of a multiple-row query—one row at a time, several rows at a time, or all rows at once—and stores the data in variables, records, or collections. https://docs.microsoft.com/en-us/sql/t-sql... A database cursor is an identifier associated with a group of rows. It is, in a sense, a pointer to the current row in a buffer. You must use a cursor in the following cases: Statements that return more than one row of data from the database server: A SELECT statement requires a select cursor. https://www.sqlservertutorial.net/sql-serv...