Many algorithmic and control techniques in current database technology were devised for disk-based systems where I/O dominated the performance. In this work we take a new look at the well-known sort-merge join which, so far, has not been in the focus of research in scalable massively ...
展开 关键词: database management systems human factors nuclear engineering computing nuclear power stations reliability risk management CORE-DATA Computerised Operator Reliability and Error Database computerised human error database human error probabilities 会议...
ACM Transactions on Database Systems A* ACM Transactions on Graphics A* ACM Transactions on Mathematical Software A* ACM Transactions on Programming Languages and Systems A* ACM Transactions on Software Engineering and Methodology A* Algorithmica: an international journal in computer science A* Annual ...
optionsBuilder.UseSqlServer(@"Server=(localdb)\mssqllocaldb;Database=MyDatabase;Trusted_Connection=True;"); Database providers can extend EF Core to enable functionality unique to specific databases. Some concepts are common to most databases, and are included in the primary EF Core components. ...
However, on some database systems, such as SQL Server, specifying a maximum length for the string can improve performance. This, along with other column configuration, can be done in the normal way. For example:C# Copy modelBuilder .Entity<PrimitiveCollections>() .Property(e => e.Booleans...
delta record 可以参考 zhuanlan.zhihu.com/p/44,Fast Serializable Multi-Version Concurrency Control for Main-Memory Database Systems,其实就是两次提交的差值信息 record不存在 先插入一个absent bit is true的,然后验证 S4.10 P1 写得很好 S5.3 “think”那里, silo固定工作负载争用比,不为client“思考”时间...
We use the termdata providerto refer to any database or a dataset from which we harvest records. Data providers harvested by CORE include disciplinary and institutional repositories, publishers and other databases. When talking aboutopen access(OA) to scientific literature, we refer to the Budapest...
Since the subquery no longer referencesBlogs, it can be evaluated once, yielding massive performance improvements on most database systems. However, some database systems, most notably SQL Server, the database is able to optimize the first query to the second query so that the performance is th...
However, for most database systems, opening a physical connection to the database is an expensive operation. Therefore most ADO.NET providers create a pool of physical connections and rent them out to DbConnection instances as needed.SQLite is a little bit different since database access is ...
A computer-implemented method for GPU acceleration of a database system, the method includes a) executing a parallelized query against a database using a database server, the parallelized query including an operation using a particular stored procedure available to the database server that includes ...