PPT
... when txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
... when txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
Chapter 7: Relational Database Design
... tuples that could be useful for a later operation. Generating the result of r1 r2 r3 sorted on the attributes common with r4 or r5 may be useful, but generating it sorted on the attributes common only r1 and r2 is not useful. Using merge-join to compute r1 r2 r3 may be costlier, but may provide ...
... tuples that could be useful for a later operation. Generating the result of r1 r2 r3 sorted on the attributes common with r4 or r5 may be useful, but generating it sorted on the attributes common only r1 and r2 is not useful. Using merge-join to compute r1 r2 r3 may be costlier, but may provide ...
ps series groups deploying microsoft® sql server in an
... automated management, easy scalability, multipath I/O support, SAN boot support, and volume replication. Not only does a PS Series SAN improve storage utilization efficiency and availability, it also delivers flexibility and ease-of-management, regardless of SAN scale. By utilizing the Microsoft Win ...
... automated management, easy scalability, multipath I/O support, SAN boot support, and volume replication. Not only does a PS Series SAN improve storage utilization efficiency and availability, it also delivers flexibility and ease-of-management, regardless of SAN scale. By utilizing the Microsoft Win ...
Slides
... Export and Import • Import Import PROV for an existing relation Provide a language construct IMPORT PROV FOR ... Import available PROV graphs for imported tuples and store them alongside the data Add three columns to each table to store imported provenance • prov doc: store a PROV-JSON snip ...
... Export and Import • Import Import PROV for an existing relation Provide a language construct IMPORT PROV FOR ... Import available PROV graphs for imported tuples and store them alongside the data Add three columns to each table to store imported provenance • prov doc: store a PROV-JSON snip ...
(A) R
... Boyce-Codd Normal Form（BC范式） A relation schema R is in BCNF with respect to a set F of functional dependencies if for all functional dependencies in F+ of the form , where R and R, at least one of the following holds: is trivial (i.e., ) is a superkey for R ...
... Boyce-Codd Normal Form（BC范式） A relation schema R is in BCNF with respect to a set F of functional dependencies if for all functional dependencies in F+ of the form , where R and R, at least one of the following holds: is trivial (i.e., ) is a superkey for R ...
CWP2: JDBC
... • Releases the JDBC and database resources • The result set is automatically closed when the associated Statement object executes a new query ...
... • Releases the JDBC and database resources • The result set is automatically closed when the associated Statement object executes a new query ...
Accelerate EDB Postgres Advanced Server
... Analysis and recommendations................................................................................................................................................................................................................................................................................ ...
... Analysis and recommendations................................................................................................................................................................................................................................................................................ ...
- Courses - University of California, Berkeley
... Create a new table for Authors that includes author name and an automatically incrementing id number (for primary key) Populate the table using the unique author names ...
... Create a new table for Authors that includes author name and an automatically incrementing id number (for primary key) Populate the table using the unique author names ...
Intro2SQL-2
... If the List_of_Columns, (column1, …), is selected from more than one table, then they must be fully qualified. This is done by specifying the Table_name.Column_name. Note the dot between the table and the column. * is used to specify all of the columns in the table. ...
... If the List_of_Columns, (column1, …), is selected from more than one table, then they must be fully qualified. This is done by specifying the Table_name.Column_name. Note the dot between the table and the column. * is used to specify all of the columns in the table. ...
Read Chapter 3.1
... Schema Diagram for the Banking Enterprise Pictorially describe a database schema including primary key and foreign key ...
... Schema Diagram for the Banking Enterprise Pictorially describe a database schema including primary key and foreign key ...
Best Practices: Physical Database Design for OLTP
... improving performance, reducing I/O, and streamlining administration tasks. It is often performed by a database administrator. Following logical database design, physical database design covers those aspects of database design that impact the actual structure of the database on disk. These aspects a ...
... improving performance, reducing I/O, and streamlining administration tasks. It is often performed by a database administrator. Following logical database design, physical database design covers those aspects of database design that impact the actual structure of the database on disk. These aspects a ...
ppt
... Remaining disks are available for other queries. Good if result tuples are from one to a few blocks. If many blocks are to be fetched and they are still fetched from one to a few disks, and potential parallelism in disk access is wasted Example of execution skew Round-robin or Hash partiti ...
... Remaining disks are available for other queries. Good if result tuples are from one to a few blocks. If many blocks are to be fetched and they are still fetched from one to a few disks, and potential parallelism in disk access is wasted Example of execution skew Round-robin or Hash partiti ...
T - VUB STAR lab
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must also abort ...
... Then Tj must abort; if Tj had been allowed to commit earlier, the schedule is not recoverable. Further, any transaction that has read a data item written by Tj must also abort ...
KorthDB6_ch3
... of information about relations, including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later, also other information such as ...
... of information about relations, including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later, also other information such as ...
SQL Server 2008 Consolidation
... Improvements in software. As hardware has improved, so has the software that can take advantage of it. The rich feature set offered by Microsoft® SQL Server ® 2008 Enterprise Edition, coupled with the virtualization capabilities of Microsoft Windows Server® 2008, provides a robust, reliable, high-pe ...
... Improvements in software. As hardware has improved, so has the software that can take advantage of it. The rich feature set offered by Microsoft® SQL Server ® 2008 Enterprise Edition, coupled with the virtualization capabilities of Microsoft Windows Server® 2008, provides a robust, reliable, high-pe ...
PowerPoint slides
... standards specifications in web time – The Consortium is working with ANSI X3H2 on a fasttrack process for adopting SQLJ as a standard – The Consortium also works with The Open Group on a set of conformance tests ...
... standards specifications in web time – The Consortium is working with ANSI X3H2 on a fasttrack process for adopting SQLJ as a standard – The Consortium also works with The Open Group on a set of conformance tests ...
Representing Weak Entity Sets
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
Azure Active Directory Authentication In Azure SQL Database
... Newly created user receives CONNECT permission to that database as member of PUBLIC role Only permissions available to the user are permissions granted to the PUBLIC role, or any permissions granted to any Windows groups that they are a member of Additional permissions can be granted to Azure AD-bas ...
... Newly created user receives CONNECT permission to that database as member of PUBLIC role Only permissions available to the user are permissions granted to the PUBLIC role, or any permissions granted to any Windows groups that they are a member of Additional permissions can be granted to Azure AD-bas ...
(A) R
... No redundancy: The relations Ri preferably should be in either BoyceCodd Normal Form or Third Normal Form. Dependency preservation: Let Fi be the set of dependencies F+ that include only attributes in Ri. Preferably the decomposition should be dependency preserving, ...
... No redundancy: The relations Ri preferably should be in either BoyceCodd Normal Form or Third Normal Form. Dependency preservation: Let Fi be the set of dependencies F+ that include only attributes in Ri. Preferably the decomposition should be dependency preserving, ...
Oracle Database
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.