In the age of rapid AI expansion, everyone has their eyes on the sky – or, at least on the cloud. Last week, Oracle and OpenAI inked a deal in which the AI model developer will purchase an eye-popping ...

Oracle SQL Developer is a great tool for managing Oracle Databases. It has a user-friendly interface that makes it easier to handle database tasks. The software offers features to simplify workflows ...

SCHED_NAME VARCHAR2(120) DEFAULT 'OCS_SCHEDULER' NOT NULL, IS_NONCONCURRENT VARCHAR2(1) default 'N' NOT NULL, IS_UPDATE_DATA VARCHAR2(1) default 'N' NOT NULL, CONSTRAINT POLL_JOB_DETAILS_PK PRIMARY ...

缺省情况下，当 ALTER TABLE 语句的 ADD CONSTRAINT 或 MODIFY 选项包含 REFERENCES 关键字以定义一个外键约束时，数据库服务器自动验证启用的引用约束。如果被引 用表的列（列组）上已经含有与引用约束的键对应的唯一索引或主键约束，则在外键约束验证期 间，您可能 ...

在GBASE南大通用GBase 8s数据库中使用 ADD CONSTRAINT 子句指定新列或现有列或列组上的主键约束、外键约束、引用约束、唯 一约束或检查约束。 例如，要将唯一约束添加至 customer 表的 fname 和 lname 列，请使用以下语句： 在同一表上定义的约束的标识符的名称必须唯一。

Summary: The `ALTER TABLE ... ADD CONSTRAINT ... UNIQUE` command creates a secondary index for specified field. Index type should be `lsm` for YB tables or `btree` for postgres temp tables.

Today, we are making available a new version of SQL Server Migration Assistant (SSMA), a free tool to help customers migrate their existing Oracle databases to SQL Server 2014. Microsoft released SQL ...

Oracle's namesake database management system has a data type called a CLOB, or Character Large OBject. Though the standard character data type, called CHAR, has a size limit of 2,000 characters, you ...