这是一个简单的关系数据库(名为simpleDB)实现,Java语言实现,这是《Database Design And Implementation》作者Edward Sciore在书中提供的一个游乐场级别的数据库实现。 为了方便学习使用,我会跟随作者的脚步去再次实现这个数据库。为方便大家阅读代码,我已经将部分关键代码添加了中文注释,并且尝试翻译了原书第3部分中的...
when started with the h2 profile, you can use the web browser to visit database tables on the urlhttp://localhost:8088/h2-console/. make sure you use the following connection properties: Driver Class : org.h2.Driver JDBC URL: jdbc:h2:mem:ledgers User Name: sa Password: sa ...
importorg.postgresql.ds.PGSimpleDataSource;//导入依赖的package包/类publicDataSourcegetDatabase(String userName, String dbName, Map<String, String> properties){finalPGSimpleDataSourceds =newPGSimpleDataSource(); ds.setServerName("localhost"); ds.setPortNumber(port); ds.setDatabaseName(dbName); ds...
从S3直接获取数据 S3 Objects (Parquet格式) Delta Sharing生态 Open Source Clients Commercial Clients Business Intelligence Analytics Governance Data Providers Unity Catalog Simplified governance for data and AI 数据湖治理现状 基于文件的权限管理: 用户 • 用户1可读 /pages/ 数据 (云存储上的文件) • ...
After you have created a select query, you run it to see the results. To run a select query, you open it in Datasheet view. If you save the query, you can reuse it whenever you need, for example, as a data source for a form, report, or another query. ...
Azure SQL Database Azure SQL 受控執行個體 Azure Synapse Analytics Azure 表格儲存體 二進位格式 Cassandra Common Data Model 格式 Concur Couchbase data.world DB2 Dataverse 分隔符號文字格式 差異格式 深入探詢 Dynamics 365 Dynamics AX Dynamics CRM
High Performance, Open Source Time Series Database & Monitoring Easy to configure and operate High & Horizontal Scalability Cloud-readiness Long-term Metrics Storage Everything in VictoriaMetrics, plus Enterprise-grade Support & Features Problem-Solving Services ...
LXC是基于cgroup等linux kernel功能的,因此container的guest系统只能是linux base的 隔离性相比KVM之类的虚拟化方案还是有些欠缺,所有container公用一部分的运行库 网络管理相对简单,主要是基于namespace隔离 cgroup的cpu和cpuset提供的cpu功能相比KVM的等虚拟化方案相比难以度量(所以dotcloud主要是按内存收费) ...
Azure Database for PostgreSQL Azure Databricks Delta Lake Azure 文件存储 Azure SQL 数据库 Azure SQL 托管实例 Azure Synapse Analytics Azure 表存储 二进制格式 Cassandra Common Data Model 格式 Concur Couchbase data.world DB2 Dataverse 带分隔符的文本格式 增量格式 钻取 Dynamics 365...
2.1.830 Part 1 Section 18.13.3, dbPr (Database Properties) 2.1.831 Part 1 Section 18.13.5, olapPr (OLAP Properties) 2.1.832 Part 1 Section 18.13.6, parameter (Parameter Properties) 2.1.833 Part 1 Section 18.13.8, s (Character Value) 2.1.834 Part 1 Section 18.13.10, textField ...