DatabaseMysql TutorialWhat is database schema? How many layers does the database architecture have?What is database schema? How many layers does the database architecture have?
1: What is database architecture
DBMS architecture helps in the design, development, implementation and Maintenance, the database can store the critical information of the enterprise, and choosing the right database architecture can help to access the data quickly and securely.
2: The database architecture has several layers
1-layer architecture
The simplest database architecture is 1-layer, in which the client, server and The databases all reside on the same machine. Whenever a database is installed and accessed in the system, it is a 1-tier architecture, but this architecture is rarely used in production.
2-tier architecture
Two-tier architecture is a database architecture where the presentation layer runs on the client (PC, mobile device, tablet, etc.) and the data is stored on the server.
An application programming interface called ODBC (Open Database Connectivity), which allows client programs to call DBMS. Today, most DBMS provide ODBC drivers for DBMS, and 2-tier architecture is provided for DBMS. Provides additional security as it is not directly exposed to end users. A current example of a two-tier architecture is a contact management system created using MS-Access.
3-tier architecture
3-tier architecture is an extension of the 2-tier architecture. The 3-tier architecture has the following layers,
Presentation layer (PC, tablet, mobile phone, etc.)
Application layer (server)
Database server
The The DBMS architecture includes an Application layer between the user and the DBMS, which is responsible for passing the user's request to the DBMS system and sending the response from the DBMS to the user. The application layer (business logic layer) is also responsible for passing data to the user or Functional logic, constraints and rules are processed before being passed down to the DBMS
Three-tier architecture is the most popular DBMS architecture.
Three: Summary
DBMS architecture helps in the design, development, implementation and maintenance of databases.
The simplest database architecture is 1-tier, where the client, server and database all reside on the same machine.
Two-tier architecture is a database architecture in which the presentation layer runs on the client and the .data is stored on the server.
3-tier architecture consists of presentation layer (PC, tablet, mobile device, etc.), application layer (server) and database server.
What is the database architecture? There are several layers of database architecture that are fully introduced. If you want to know more about MySQL tutorial, please pay attention to the php Chinese website.
The above is the detailed content of What is database schema? How many layers does the database architecture have?. For more information, please follow other related articles on the PHP Chinese website!
What Are the Limitations of Using Views in MySQL?May 14, 2025 am 12:10 AMMySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma
Securing Your MySQL Database: Adding Users and Granting PrivilegesMay 14, 2025 am 12:09 AMProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)
What Factors Influence the Number of Triggers I Can Use in MySQL?May 14, 2025 am 12:08 AMMySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M
MySQL: Is it safe to store BLOB?May 14, 2025 am 12:07 AMYes,it'ssafetostoreBLOBdatainMySQL,butconsiderthesefactors:1)StorageSpace:BLOBscanconsumesignificantspace,potentiallyincreasingcostsandslowingperformance.2)Performance:LargerrowsizesduetoBLOBsmayslowdownqueries.3)BackupandRecovery:Theseprocessescanbe
MySQL: Adding a user through a PHP web interfaceMay 14, 2025 am 12:04 AMAdding MySQL users through the PHP web interface can use MySQLi extensions. The steps are as follows: 1. Connect to the MySQL database and use the MySQLi extension. 2. Create a user, use the CREATEUSER statement, and use the PASSWORD() function to encrypt the password. 3. Prevent SQL injection and use the mysqli_real_escape_string() function to process user input. 4. Assign permissions to new users and use the GRANT statement.
MySQL: BLOB and other no-sql storage, what are the differences?May 13, 2025 am 12:14 AMMySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand
MySQL Add User: Syntax, Options, and Security Best PracticesMay 13, 2025 am 12:12 AMToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith
MySQL: How to avoid String Data Types common mistakes?May 13, 2025 am 12:09 AMToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Notepad++7.3.1
Easy-to-use and free code editor
