The Library CRUD Project is a Python-based application developed using the PYQT5 library for building graphical user interfaces (GUI). The project incorporates a SQL Server database for data management, providing a seamless interaction between the user interface and the database. This system allows users to perform Create, Read, Update, and Delete (CRUD) operations on different entities related to a library system, such as books, materials, users, and more.
The project includes a user-friendly GUI designed with Designer and connects to a SQL Server database for persistent data storage. This makes the system robust, efficient, and scalable.
The project is organized into several key directories and components to ensure modularity and ease of use:
This folder contains all the .py files for the data layer classes, which manage the interaction between the application and the database.
This folder holds all the .ui and .py files generated with the PYQT5 library. These files represent the different windows of the application.
This folder stores the database script/logic model .sql and the class diagram for the project. It also includes the SQL script required to create the database structure and tables.
This folder contains the Python code for each developed class, which manages specific functionalities in the application.
Below is the SQL script to create the database Biblioteca along with its tables:
USE [master]
GO
/****** Object: Database [Biblioteca] Script Date: 18/09/2022 2:05:15 ******/
CREATE DATABASE [Biblioteca]
CONTAINMENT = NONE
ON PRIMARY
( NAME = N'Biblioteca', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQLEXPRESS\MSSQL\DATA\Biblioteca.mdf' , SIZE = 8192KB , MAXSIZE = UNLIMITED, FILEGROWTH = 65536KB )
LOG ON
( NAME = N'Biblioteca_log', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQLEXPRESS\MSSQL\DATA\Biblioteca_log.ldf' , SIZE = 8192KB , MAXSIZE = 2048GB , FILEGROWTH = 65536KB )
WITH CATALOG_COLLATION = DATABASE_DEFAULT
GO
ALTER DATABASE [Biblioteca] SET COMPATIBILITY_LEVEL = 150
GO
IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [Biblioteca].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO
ALTER DATABASE [Biblioteca] SET ANSI_NULL_DEFAULT OFF
GO
ALTER DATABASE [Biblioteca] SET ANSI_NULLS OFF
GO
ALTER DATABASE [Biblioteca] SET ANSI_PADDING OFF
GO
ALTER DATABASE [Biblioteca] SET ANSI_WARNINGS OFF
GO
ALTER DATABASE [Biblioteca] SET ARITHABORT OFF
GO
ALTER DATABASE [Biblioteca] SET AUTO_CLOSE ON
GO
ALTER DATABASE [Biblioteca] SET AUTO_SHRINK OFF
GO
ALTER DATABASE [Biblioteca] SET AUTO_UPDATE_STATISTICS ON
GO
ALTER DATABASE [Biblioteca] SET CURSOR_CLOSE_ON_COMMIT OFF
GO
ALTER DATABASE [Biblioteca] SET CURSOR_DEFAULT GLOBAL
GO
ALTER DATABASE [Biblioteca] SET CONCAT_NULL_YIELDS_NULL OFF
GO
ALTER DATABASE [Biblioteca] SET NUMERIC_ROUNDABORT OFF
GO
ALTER DATABASE [Biblioteca] SET QUOTED_IDENTIFIER OFF
GO
ALTER DATABASE [Biblioteca] SET RECURSIVE_TRIGGERS OFF
GO
ALTER DATABASE [Biblioteca] SET ENABLE_BROKER
GO
ALTER DATABASE [Biblioteca] SET AUTO_UPDATE_STATISTICS_ASYNC OFF
GO
ALTER DATABASE [Biblioteca] SET DATE_CORRELATION_OPTIMIZATION OFF
GO
ALTER DATABASE [Biblioteca] SET TRUSTWORTHY OFF
GO
ALTER DATABASE [Biblioteca] SET ALLOW_SNAPSHOT_ISOLATION OFF
GO
ALTER DATABASE [Biblioteca] SET PARAMETERIZATION SIMPLE
GO
ALTER DATABASE [Biblioteca] SET READ_COMMITTED_SNAPSHOT OFF
GO
ALTER DATABASE [Biblioteca] SET HONOR_BROKER_PRIORITY OFF
GO
ALTER DATABASE [Biblioteca] SET RECOVERY SIMPLE
GO
ALTER DATABASE [Biblioteca] SET MULTI_USER
GO
ALTER DATABASE [Biblioteca] SET PAGE_VERIFY CHECKSUM
GO
ALTER DATABASE [Biblioteca] SET DB_CHAINING OFF
GO
ALTER DATABASE [Biblioteca] SET FILESTREAM( NON_TRANSACTED_ACCESS = OFF )
GO
ALTER DATABASE [Biblioteca] SET TARGET_RECOVERY_TIME = 60 SECONDS
GO
ALTER DATABASE [Biblioteca] SET DELAYED_DURABILITY = DISABLED
GO
ALTER DATABASE [Biblioteca] SET ACCELERATED_DATABASE_RECOVERY = OFF
GO
ALTER DATABASE [Biblioteca] SET QUERY_STORE = OFF
GO
USE [Biblioteca]
GO
/****** Object: Table [dbo].[Docente] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Docente](
[id] [int] NOT NULL,
[titulo_3er_nivel] [varchar](max) NULL,
[titulo_4to_nivel] [varchar](max) NULL,
[contador_docente] [int] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Table [dbo].[Estudiante] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Estudiante](
[id] [int] NOT NULL,
[nivel] [int] NULL,
[contador_estudiante] [int] NULL
) ON [PRIMARY]
GO
/****** Object: Table [dbo].[Libro] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Libro](
[id] [int] NOT NULL,
[tipo_pasta] [nvarchar](max) NULL,
[contador_libro] [int] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Table [dbo].[Material] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Material](
[codigo] [nchar](10) NOT NULL,
[autor] [nvarchar](max) NULL,
[titulo] [nvarchar](max) NULL,
[anio] [int] NULL,
[editorial] [nvarchar](max) NULL,
[disponible] [bit] NULL,
[cantidad_disponible] [int] NULL,
[ntipo] [int] NULL,
CONSTRAINT [PK_Material] PRIMARY KEY CLUSTERED
(
[codigo] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Table [dbo].[Pedido] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Pedido](
[id] [int] NOT NULL,
[solicitante] [int] NULL,
[lista_material] [int] NULL,
[material] [varchar](max) NULL,
[fecha_prestamo] [date] NULL,
[fecha_devolucion] [date] NULL,
[contador_pedido] [int] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Table [dbo].[Persona] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Persona](
[cedula] [varchar](10) NOT NULL,
[nombres] [nvarchar](max) NULL,
[apellidos] [nvarchar](max) NULL,
[email] [nvarchar](max) NULL,
[telefono] [nvarchar](max) NULL,
[direccion] [nvarchar](max) NULL,
[numero_libros] [int] NULL,
[activo] [bit] NULL,
[carrera] [nvarchar](max) NULL,
[rol] [int] NOT NULL,
CONSTRAINT [PK_Persona] PRIMARY KEY CLUSTERED
(
[cedula] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Table [dbo].[Revista] Script Date: 18/09/2022 2:05:15 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Revista](
[id] [int] NOT NULL,
[tipo] [varchar](max) NULL,
[contador_revista] [int] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
/****** Object: Index [IX_Docente] Script Date: 18/09/2022 2:05:15 ******/
CREATE UNIQUE NONCLUSTERED INDEX [IX_Docente] ON [dbo].[Docente]
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
GO
/****** Object: Index [IX_Estudiante] Script Date: 18/09/2022 2:05:15 ******/
CREATE UNIQUE NONCLUSTERED INDEX [IX_Estudiante] ON [dbo].[Estudiante]
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
GO
/****** Object: Index [IX_Libro] Script Date: 18/09/2022 2:05:15 ******/
CREATE UNIQUE NONCLUSTERED INDEX [IX_Libro] ON [dbo].[Libro]
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
GO
/****** Object: Index [IX_Material] Script Date: 18/09/2022 2:05:15 ******/
CREATE UNIQUE NONCLUSTERED INDEX [IX_Material] ON [dbo].[Material]
(
[ntipo] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
GO
/****** Object: Index [IX_Persona] Script Date: 18/09/2022 2:05:15 ******/
CREATE UNIQUE NONCLUSTERED INDEX [IX_Persona] ON [dbo].[Persona]
(
[rol] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Docente] WITH CHECK ADD CONSTRAINT [FK_Docente_Persona] FOREIGN KEY([id])
REFERENCES [dbo].[Persona] ([rol])
GO
ALTER TABLE [dbo].[Docente] CHECK CONSTRAINT [FK_Docente_Persona]
GO
ALTER TABLE [dbo].[Estudiante] WITH CHECK ADD CONSTRAINT [FK_Estudiante_Persona] FOREIGN KEY([id])
REFERENCES [dbo].[Persona] ([rol])
GO
ALTER TABLE [dbo].[Estudiante] CHECK CONSTRAINT [FK_Estudiante_Persona]
GO
ALTER TABLE [dbo].[Libro] WITH CHECK ADD CONSTRAINT [FK_Libro_Material] FOREIGN KEY([id])
REFERENCES [dbo].[Material] ([ntipo])
GO
ALTER TABLE [dbo].[Libro] CHECK CONSTRAINT [FK_Libro_Material]
GO
ALTER TABLE [dbo].[Persona] WITH CHECK ADD CONSTRAINT [FK_Persona_Persona] FOREIGN KEY([cedula])
REFERENCES [dbo].[Persona] ([cedula])
GO
ALTER TABLE [dbo].[Persona] CHECK CONSTRAINT [FK_Persona_Persona]
GO
ALTER TABLE [dbo].[Revista] WITH CHECK ADD CONSTRAINT [FK_Revista_Material] FOREIGN KEY([id])
REFERENCES [dbo].[Material] ([ntipo])
GO
ALTER TABLE [dbo].[Revista] CHECK CONSTRAINT [FK_Revista_Material]
GO
USE [master]
GO
ALTER DATABASE [Biblioteca] SET READ_WRITE
GO
-
Install the PYQT5 libraries.
-
Execute the command "py Library.py" (The py varies depending on the environment variable).
-
Done.
-
Execution of several windows
-
Evidence of time-of-day operation