OrientDB installation and use

OrientDB is a graphical database that combines graphical databases with various data models such as document oriented, key value, and object oriented. Below, I will provide a detailed introduction to the installation process of OrientDB and demonstrate how to create data tables, insert, modify, query, and delete data. The steps to install OrientDB are as follows: 1. Download OrientDB: on the official website of OrientDB（ https://orientdb.com/ ）Download the installation package suitable for your system. 2. Unzip installation package: Unzip the downloaded installation package to the directory where you want to install OrientDB. 3. Start OrientDB: Enter the extracted directory, locate the bin folder, and then execute orientdb. sh (Linux/MacOS) or orientdb. bat (Windows) to start the OrientDB service. 4. Access the OrientDB console: Enter in the browser http://localhost:2480/ Then, according to the prompts, enter the default username and password (username is root, password is blank) to enter the OrientDB console. Next, I will demonstrate how to create a data table and perform data insertion, modification, query, and deletion. 1. Create a data table: Click the "Schema" tab in the left navigation bar of the console page, and then click the "Create Class" button in the upper right corner. Enter the table name (such as "Person") in the pop-up dialog box, and then click the "Create" button to create the data table. 2. Insert data: Click on the "Schema" tab in the left navigation bar of the console page, and then click on the newly created data table (such as "Person"). Click the "Create Document" button in the upper right corner of the data table page, enter the fields and values of the data in the pop-up dialog box, and then click the "Create" button to insert a piece of data. 3. Modify data: On the data table page, click the "Edit" button on the right side of the data entry to be modified, then modify the fields and values of the data, and click the "Save" button to save the modifications. 4. Query Data: Click the "Query" tab in the left navigation bar of the console page, enter a query statement (such as "SELECT * From Person") in the query input box, and then click the "Run" button to execute the query. 5. Delete data: Click on the "Schema" tab in the left navigation bar of the console page, and then click on the data table to be deleted (such as "Person"). Select the data entry to delete on the data table page, then click the "Delete" button in the upper right corner, and then click the "Delete" button to delete the data. The above is a brief introduction to the installation and use of OrientDB. Through the console interface, you can create data tables, insert, modify, query, and delete data. You can also further understand other advanced functions and operations of OrientDB, such as indexing, graphic queries, etc.