Constraints Resources

About Constraints

Constraints are conditions which are used when face some problems at designing of database and web pages. Each Constraints defines a subset of the set of all possible designs in which it is satisfied. When several constraints are specified, it is only the possibilities within the intersection of all the subsets that we are interested in. This intersection becomes smaller as more constraints are added. If it becomes empty, then there is no design which satisfies all the constraints. The designer’s skill is now in deciding which constraints it is safe to relax. Constraints are the rules enforced on data columns on table. These are used to limit the type of data that can go into a table. This ensures the accuracy and reliability of the data in the database.

Share

Related resources for Constraints

Types of Keys in SQL10/1/2024 6:09:16 AM. In SQL, keys play a crucial role in maintaining data integrity and defining relationships between tables. Common types include the Primary Key, which uniquely identifies records; the Foreign Key, link
Different Network Types and Standards.9/29/2024 5:47:07 AM. Different network types, such as LANs, WANs, and wireless networks, provide various benefits like speed and flexibility while also posing constraints like cost and security risks, and understanding th
Detailed explanation of SQL Server Triggers and its Advantages8/6/2024 5:27:50 AM. SQL Server triggers are automated stored procedures that execute in response to specific database events such as INSERT, UPDATE, or DELETE (DML) and CREATE, ALTER, or DROP (DDL). They enforce business
Understanding the Art of C# Generics7/10/2024 2:04:05 PM. Unlock the power of C# Generics with our comprehensive guide. Master best practices, explore advanced scenarios, and elevate your coding skills with this in-depth C# Generics tutorial. Learn to write
Primary Key and Unique Key Constraints6/29/2024 10:06:27 AM. Primary Key and Unique Key Constraints in database management ensure data integrity and uniqueness. A Primary Key ensures each row is unique and not null, with only one per table. Unique Keys also ens
Conventional Routing VS Attribute Routing5/28/2024 7:25:07 AM. Learn about ASP.NET MVC routing, including attribute routing, route table management, default and custom routes, route constraints, order properties, and route names. Understand the purpose of Ignore
Understanding Generic Constraints in C#5/21/2024 5:41:04 AM. Generics in C# allow you to define classes, methods, and interfaces with a placeholder for the type of data they store or use. This flexibility enables you to write more general and reusable code.
Difference Between Primary key and Unique key in SQL5/21/2024 4:33:26 AM. The difference between Primary Key and Unique Key in SQL lies in their fundamental roles within a database schema. A Primary Key uniquely identifies each record in a table and ensures data integrity b
Unique Key in SQL: Syntax, Usages, and Example5/16/2024 9:30:31 AM. Unique Key in SQL ensures each record in a database table is distinct. Syntax involves defining columns with UNIQUE constraints. It prevents duplicate values, enhancing data integrity and search effic
ASP.NET Web API CRUD Operations4/23/2024 7:28:31 AM. ASP.NET Web API facilitates Create, Read, Update, and Delete (CRUD) operations over HTTP. Utilizing HTTP methods like GET, POST, PUT, and DELETE, it interacts with data using JSON/XML serialization.
MySQL Queries Cheat Sheet4/18/2024 3:54:25 AM. In this article, we will learn about MySQL querying essentials, covering basic SQL commands, data manipulation functions, constraints, and frequently asked questions, providing valuable insights for b
Globally Configuring Values For JSON Serializer In ASP.NET Core 3.14/8/2024 8:18:26 AM. Learn how to set constraints globally for JSON serialization in ASP.NET Core, avoiding manual decoration of every property. Customize data formatting using converters, and fallback to default settings
Explain Route Constraints in MVC4/1/2024 8:25:20 AM. Route constraints in MVC define rules for matching incoming URLs to route templates, enhancing control over routing behavior. They specify conditions like data type, length, or regular expressions, en
Routing in ASP.NET Core9/18/2023 6:04:20 AM. In this article, we delve into ASP.NET Core routing, a fundamental component of web applications. Routing determines how incoming requests are matched to specific actions and controllers, playing a pi
MySQL Key Constraints 8/10/2023 5:41:42 AM. In this article we will learn about constraints on different keys.
How To Handle Foreign Key Constraints In MySQL5/9/2023 11:38:04 AM. In this article, I am going to explain to you the foreign key constraint.
SQL Server Constraints: Types and Usage5/2/2023 2:46:32 PM. SQL Server Constraints: Types and Usage
How To Use MySQL Constraints And Understand Their Importance4/24/2023 10:11:42 AM. MySQL constraints are rules or restrictions that enforce data integrity and consistency by preventing invalid or inconsistent data from being inserted or updated in tables.
How to Use Constraints in SQL Server Like a Pro3/10/2023 9:35:45 AM. Constraints are an important tool for maintaining data integrity in SQL Server. In this article, you'll learn how to use constraints like a pro to ensure your data is accurate and reliable. We&#39
SQL Constraints3/9/2023 8:23:12 AM. In this article, we are going to learn about the importance of SQL and its Constraints.
SQL Server INFORMATION_SCHEMA Views3/6/2023 5:38:01 AM. Learning what's INFORMATION_SCHEMA is and showing its common basic usages.
How To Delete A Column With Default Constraints In SQL Server1/25/2023 5:19:10 AM. This article let us know, how to delete a column that has a default constraint in SQL server.
Constraints in Generics9/2/2022 10:18:23 AM. Constraints are used in Generics to restrict the types that can be substituted for type parameters. Here we will see some of the commonly used types of constraints.
How To Rename Database Objects In SQL Server8/17/2022 6:37:27 AM. In this article, you will learn how to rename database objects in SQL Server.
C# DataAdapter Returning Exception “Failed To Enable Constraints.”7/27/2022 8:10:58 PM. We explain how to debug and get more information on the generic exception, “Failed to enable constraints.”
Azure Durable Functions - Constraints To Keep In Mind10/11/2021 12:52:50 PM. This article covers some of the constraints observed with the use of Durable Functions in Azure.
Custom Route Constraints in ASP.Net MVC 51/28/2021 6:13:24 AM. This article describes Custom Route Constraints in ASP.Net MVC 5 with parameter constraints by placing a constraint name after the parameter name separated by a colon.
Establishing Relation and Constraints in a DataTable Using C#11/4/2020 6:52:14 AM. This article explains how to create a relationship between two DataTables and constraints in ADO.Net using C#.
CopySchema10/29/2020 11:54:02 PM. CopySchema is a utility for copying all the data from one Oracle schema to another. Although similar to the exp/imp and bulk load utilities of Oracle, it has the advantage of offering a simple GUI int
Layouts in Android9/21/2020 7:21:41 AM. This article looks at layouts in Android with Android Studio
Understanding SQL Server Constraints8/8/2019 11:55:40 PM. In this article, I am going to explain SQL Server constraints such as Unique key constraint Primary key and foreign key and how to implement constraints in SQL Server.
Creating Check Constraint on a Table in SQL Server 20127/17/2019 3:45:44 AM. This article will give you an idea of how to use the SQL Server Check Clause and also defines where you can use it.
Enable/Disable Constraints in SQL Server7/11/2019 5:27:58 AM. In this article, I explain the best way to insert valid data using constraints. How to enable check constraint on the table, How to enable FOREIGN KEY Constraint.
ADO.Net Constraints - Unique and Primary Key2/26/2018 12:50:47 AM. This video explains how we can implement Unique and Primary Key and FrontEnd. It then walks you through DataTable merge and checks the Constraints behavior.
Generic Type Constraints: Where Keyword in C#6/27/2017 6:56:05 AM. This article explains the where keyword in C#. Where keyword in C# can be used in combination with the generic classes to add some constraints on it. By adding the constraints, your generic class can
Generic Constraints In A Nutshell2/13/2017 11:45:59 PM. This video describes about Generic Constraints.
An Easy Way To Understand Constraints In SQL Server12/26/2016 10:44:38 AM. In this article, you will learn the usage of constraints in SQL Server.
ADO.NET Objects: Part II9/19/2014 2:07:37 AM. In this article I will explain about ADO.NET objects. This will help you in understanding them in an easy manner.
Oracle SQL Commands: Part 911/12/2013 1:22:57 PM. In this article you will learn about more Oracle commands.
Constraints in Oracle : Part 210/25/2013 1:38:42 AM. This article explains Foreign Key Constraints in Oracle.
Constraints in Oracle : Part 110/25/2013 1:34:47 AM. This article explains the Constraint clause in Oracle that is basically used to apply the specific rules to the data that restrict the values/data entered into the database columns.
One or more rows contain values violating non-null, unique, or foreign-key constraints 9/30/2012 3:48:28 AM. You may get this error when using a typed DataSet. This tip shows how to fix it.
Unique column constraints in SharePoint 20104/1/2011 4:54:44 AM. In this article we will be seeing how to enforce unique value for a list or library column in SharePoint 2010.
System Views and Functions in SQL Server 2005 by Steve on Jul 06, 2006 3/15/2007 7:07:06 AM. I tried to explore some basic TSQL functions and VIEWS in SQL Server 2005. I believe this would be useful when we write DDL-DML Statements.

Topics