drupal 8 database schema

/epel-release-latest-7.noarch.rpm# rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpmInstall php packages # yum install php55w php55w-opcache php55w-gd php55w-mbstring php55w-mysqlnd php55w-pdo php55w-opcache php55w-xml The above is a required package for drupal:TypeDescriptionPhp55w required, version 5.35php55w-cli required php55w-common required php55w-gd required, drupal 8 required php55w-

Preface: The cornerstone of high performance: good logic, physical design, according to the system to execute the query statement design schema This chapter focuses on MySQL database design, introduces the difference between MySQL database design and other relational database management system.

MySQL database design-detailed description of Schema operations using Python, pythonschema The bow whispered to the arrow, "Your freedom is mine ". Schema is like an arrow and bows like Python. Choosing Python is the biggest freedom of Schema. Freedom should be an opportunity to make yourself better. What is

table join (join) and aggregate queries (aggregation) for large database tables, providing the highest performanceWhen using the hash table, SQL DW uses the hash function to assign each row to the same partition.In a database table, define one of the columns in the column, and use the hash function to save the data to the same partitionDescription of the hash Table　　　　9. Copy ReplicaReplication tables prov

background separation" architecture should be usedUser foreground side, "establishing non-UID attribute mapping relationship to UID" best practice:Index Table method: The mapping relation of record Login_name->uid in databaseCache mapping Method: the mapping relationship of record login_name->uid in cacheLogin_name Generating UIDLogin_name gene into UIDOperating background side, "foreground and background separation" best practices:Front desk, back-end system web/service/db decoupling, avoid ba

1. Oracle is an important place in the company and the breadth of applications. 2. Oracle Overview, which emphasizes the role of the root, which is Oracle's overall architecture, is mastered by 40% of Oracle knowledge. 3. static files in the database do not start is the operating system file, after startup is the database process. 4. dynamic files, mainly the SGA sharing area and some core processes. 5. The

demanding data consistency requirements. Disadvantage: Non-Distributed File system environments cannot support mirrored data at the same time, performance and reliability are contradictory and cannot be applied to environments that are both demanding. Maintenance costs are higher than MySQL Replication. After saying the pros and cons of a variety of common architectures, the rest is how to choose the right architecture to use in a real-world production environment. In this respect everyone has

the current database user USER_ID () Returns the current database principal_id DATABASE_PRINCIPAL_ID () Returns the current database principal_id Original_login () Returns the original login name in the context switch money Has_dbaccess (' database