발표자료
... • Query can specify a graph pattern with more than one triples • Since the variable ?what appears in both triples, the graph pattern is joined ...
... • Query can specify a graph pattern with more than one triples • Since the variable ?what appears in both triples, the graph pattern is joined ...
Fundamentals of Database Systems
... relational algebra expression. It represents the input relations of the query as leaf nodes of the tree, and represents the relational algebra operations as internal nodes. An execution of the query tree consists of executing an internal node operation whenever its operands are available and then re ...
... relational algebra expression. It represents the input relations of the query as leaf nodes of the tree, and represents the relational algebra operations as internal nodes. An execution of the query tree consists of executing an internal node operation whenever its operands are available and then re ...
jayavel - Berkeley Database Research
... • Existing data and applications – XML applications have to inter-operate with existing relational data and applications – Not enough incentive to move all existing business applications to XML database systems • Remember object-oriented database systems? ...
... • Existing data and applications – XML applications have to inter-operate with existing relational data and applications – Not enough incentive to move all existing business applications to XML database systems • Remember object-oriented database systems? ...
SQL Tutorial - TutorialsPoint
... This tutorial is prepared for beginners to help them understand the basic as well as the advanced concepts related to SQL languages. This tutorial will give you enough understanding on the various components of SQL along with suitable examples. ...
... This tutorial is prepared for beginners to help them understand the basic as well as the advanced concepts related to SQL languages. This tutorial will give you enough understanding on the various components of SQL along with suitable examples. ...
3-Database
... How to do Object Persistence Choices for How to do Object Persistence? 1. write your own DAO using JDBC ...
... How to do Object Persistence Choices for How to do Object Persistence? 1. write your own DAO using JDBC ...
redo – to revise or reconstruct -
... with their internal and external customers. Availability, performance and capacity planning are the cornerstones upon which successful companies position their IT infrastructure to remain competitive. The Oracle redo construct plays a pivotal role in achieving these goals for those companies running ...
... with their internal and external customers. Availability, performance and capacity planning are the cornerstones upon which successful companies position their IT infrastructure to remain competitive. The Oracle redo construct plays a pivotal role in achieving these goals for those companies running ...
transparencies - Indico
... Query for object Y is not cached, OK Queries on IDs of static objects, static cache is OK ...
... Query for object Y is not cached, OK Queries on IDs of static objects, static cache is OK ...
Chapter 9: Object-Relational Databases
... • Extend the relational data model by including object orientation and constructs to deal with added data types. • Allow attributes of tuples to have complex types, including non-atomic values such as nested relations. • Preserve relational foundations, in particular the declarative access to data, ...
... • Extend the relational data model by including object orientation and constructs to deal with added data types. • Allow attributes of tuples to have complex types, including non-atomic values such as nested relations. • Preserve relational foundations, in particular the declarative access to data, ...
Flashback Database
... ALTER TABLESPACE FLASHBACK {ON|OFF}
SQL> SELECT name, flashback_on
2 FROM
v$tablespace;
...
... ALTER TABLESPACE
Lesson 16
... ALTER TABLESPACE FLASHBACK {ON|OFF}
SQL> SELECT name, flashback_on
2 FROM
v$tablespace;
...
... ALTER TABLESPACE
Microsoft SQL Server I/O Basics
... Time of Last Access The time of last access is a caching algorithm that enables cache entries to be ordered by their access times. SQL Server 2005 changed its lazy writer so that it returns data pages to the free list based on the time they were last accessed. This is different from the reference co ...
... Time of Last Access The time of last access is a caching algorithm that enables cache entries to be ordered by their access times. SQL Server 2005 changed its lazy writer so that it returns data pages to the free list based on the time they were last accessed. This is different from the reference co ...
Slides for Ch-8
... Easy for limited capability scripting languages, harder for general purpose programming languages like Java ...
... Easy for limited capability scripting languages, harder for general purpose programming languages like Java ...
Slides from Lecture 20 - Courses - University of California, Berkeley
... -- high temperature prcp real, -- precipitation date date ...
... -- high temperature prcp real, -- precipitation date date ...
Processing XML Data
... • Step 2: map the XML document into tuples in the relational database. • Step 3: given a query Q in Xquery, translate it to a set of queries P over the relational database. • Step 4: translate the tuples returned from the relational database into XML elements. ...
... • Step 2: map the XML document into tuples in the relational database. • Step 3: given a query Q in Xquery, translate it to a set of queries P over the relational database. • Step 4: translate the tuples returned from the relational database into XML elements. ...
Object-relational complex structures for XML storage
... features in ORDB, such as LOB and XML Type since, they have not been implemented uniformly by ORDB products. The paper is structured as follows. Section 2 briefly introduces a number of new ORDB data types that have been standardized in SQL. We only include the types that will be used for XML data s ...
... features in ORDB, such as LOB and XML Type since, they have not been implemented uniformly by ORDB products. The paper is structured as follows. Section 2 briefly introduces a number of new ORDB data types that have been standardized in SQL. We only include the types that will be used for XML data s ...
PHP and MySQL
... – DB performs the search (random access) vs. Sequential search - a line at a time in file ...
... – DB performs the search (random access) vs. Sequential search - a line at a time in file ...
Troubleshooting SQL Server 2000
... database performance. You can enhance performance of a database by taking small measures, which do not require much effort on your part except that you need to perform them at the right time. Some of these measures are: Indexing Creating large tables Defining optimized data retrieval queries In addi ...
... database performance. You can enhance performance of a database by taking small measures, which do not require much effort on your part except that you need to perform them at the right time. Some of these measures are: Indexing Creating large tables Defining optimized data retrieval queries In addi ...
Using AlwaysOn Availability Groups for High Availability and
... 1. Enable AlwaysOn Availability Group for all the SQL Server instances on all the three nodes. For more information, see Enable and Disable AlwaysOn Availability Groups. 2. On the second and third nodes, connect to SQL Server instance using SQL Server Management Studio, and delete the DQS databases: ...
... 1. Enable AlwaysOn Availability Group for all the SQL Server instances on all the three nodes. For more information, see Enable and Disable AlwaysOn Availability Groups. 2. On the second and third nodes, connect to SQL Server instance using SQL Server Management Studio, and delete the DQS databases: ...
Intro to DB2 UDB Programming Using REXX
... will access a different database from the one against which it was precompiled. You should re-bind your application if the database statistics have changed since the last binding. You do not need to pre-compile or bind DB2 CLI applications; they use common access packages provided with DB2. You just ...
... will access a different database from the one against which it was precompiled. You should re-bind your application if the database statistics have changed since the last binding. You do not need to pre-compile or bind DB2 CLI applications; they use common access packages provided with DB2. You just ...
DTS
... DTS also allows data to be transformed and loaded from heterogeneous sources using OLE DB, ODBC or text-only files into any supported database. DTS is included with Microsoft SQL Server 2000 and is always used with SQL Server databases although can be used independently with other databases. D ...
... DTS also allows data to be transformed and loaded from heterogeneous sources using OLE DB, ODBC or text-only files into any supported database. DTS is included with Microsoft SQL Server 2000 and is always used with SQL Server databases although can be used independently with other databases. D ...