Update Introduction.md

Author: pchemguy

Introduction.md

@@ -19,7 +19,7 @@ At the other extreme is the development strategy not relying on SQL abstracting
   - Minimizing data transfers between the database and the application is almost always beneficial. Such operations are inherently slow (to a lesser extent for embedded in-process engines, such as SQLite), and the characteristic time of data transfer operations can be several magnitudes higher than local processing times.
   - Implementing model-related logic in the SQL code may resemble the object-oriented paradigm and reduce coupling between the application and its backend. Such code chunks can be used by various frontends on different platforms without any modification so long as the backend remains the same.
 
-SQLite supports several advanced features facilitating the development of structured, reusable, and loosely coupled SQL code, including parameterized queries, common table expressions (CTEs), recursive CTEs, and the JSON library. The [Metadata and Reflection][] section provides basic and more advanced SQL queries for retrieving database- and engine-related metadata, illustrating the use of simple CTEs for structuring SQL code. The [Design Patterns][] section discusses all these mentioned features in detail. It also provides possible approaches to compensating for the missing support for variables and limited support for string operations, illustrating the utility of these features. Finally, the [Materialized Paths][] applies discussed ideas to a sample implementation of a hierarchical category system in SQL. This section explores the possibility of developing an OOP-like SQL source code library implementing all typical operations for such a system in SQL.
+SQLite supports several advanced features facilitating the development of structured, reusable, and loosely coupled SQL code, including parameterized queries, common table expressions (CTEs), recursive CTEs, and the JSON library. The [Metadata and Reflection][] section provides basic and more advanced SQL queries for retrieving database- and engine-related metadata, illustrating the use of ordinary CTEs for structuring SQL code. The [Design Patterns][] section discusses all these mentioned features in detail. It also provides possible approaches to compensating for the missing support for variables and limited support for string operations, illustrating the utility of these features. Finally, the [Materialized Paths][] applies discussed ideas to a sample implementation of a hierarchical category system in SQL. This section explores the possibility of developing an OOP-like SQL source code library implementing all typical operations for such a system in SQL.
 
 ### Structured developement strategies and separation of concerns