Introduction to Database Principles http://cbb.sjtu.edu.cn
... CREATE DOMAIN Pound numeric(12,2); We cannot assign or compare values of different domains however, we can use cast to convert (CAST r.A as Pound) ...
... CREATE DOMAIN Pound numeric(12,2); We cannot assign or compare values of different domains however, we can use cast to convert (CAST r.A as Pound) ...
Efficiently Processing Queries on Interval-and
... attribute (key). Unfortunately, updates do not seem to have non-trivial upper bounds, and adding as well as deleting arbitrary intervals can deteriorate the query efficiency of this structure. As an alternative, multi-dimensional or spatial access structures may be used for combined indexing. The pr ...
... attribute (key). Unfortunately, updates do not seem to have non-trivial upper bounds, and adding as well as deleting arbitrary intervals can deteriorate the query efficiency of this structure. As an alternative, multi-dimensional or spatial access structures may be used for combined indexing. The pr ...
ORA10G201-VER2 Oracle Database 10g: Administration I (5 days
... Oracle Database 10g: Administration I (5 days) Course Objectives The overall objective of this course is to allow the reader to gain the skills necessary for basic day-to-day administration of an Oracle10g database. This course is the starting for Oracle database administrators and also sets the fou ...
... Oracle Database 10g: Administration I (5 days) Course Objectives The overall objective of this course is to allow the reader to gain the skills necessary for basic day-to-day administration of an Oracle10g database. This course is the starting for Oracle database administrators and also sets the fou ...
ID.office ID card management – The new generation of ID card
... connections and printer settings are centrally stored in a directory. ...
... connections and printer settings are centrally stored in a directory. ...
Reporting and Data Access Methods
... provides a robust, flexible and rich set of abilities to meet most all user reporting and data extraction needs. Act! offers users read-only access through two versions of the OLE DB Provider. Administrators can choose to set a password through Act! Reader to grant direct read-only access to all Pre ...
... provides a robust, flexible and rich set of abilities to meet most all user reporting and data extraction needs. Act! offers users read-only access through two versions of the OLE DB Provider. Administrators can choose to set a password through Act! Reader to grant direct read-only access to all Pre ...
Security
... determines whether a user can read or write an object based on rules that involve the security level of the object and the clearance of the user. These rules ensure that sensitive data can never be ‘passed on’ to another user without the necessary clearance. ...
... determines whether a user can read or write an object based on rules that involve the security level of the object and the clearance of the user. These rules ensure that sensitive data can never be ‘passed on’ to another user without the necessary clearance. ...
Negative Effects of Learning Spreadsheet Management on Learning
... Place of columns and rows Logical level you can transpose places of columns in databases. Similarly, you can transpose places of rows. Of course on physical level DBMSs use a sequence of them, but they do not show it to users. In contrary, if you transpose columns or rows in spreadsheets, what will ...
... Place of columns and rows Logical level you can transpose places of columns in databases. Similarly, you can transpose places of rows. Of course on physical level DBMSs use a sequence of them, but they do not show it to users. In contrary, if you transpose columns or rows in spreadsheets, what will ...
cs109sqlnotes1a
... entity in question. In these notes all of these sets of terminology may be used at one time or another, and they may be mixed up, referring to attributes of records, or rows of files, for example. You may also use the terminology indiscriminately when answering questions. It’s simply important that ...
... entity in question. In these notes all of these sets of terminology may be used at one time or another, and they may be mixed up, referring to attributes of records, or rows of files, for example. You may also use the terminology indiscriminately when answering questions. It’s simply important that ...
Chapter 3 - School of Business Administration
... * What is a model? What does it do? For whom is it useful? ...
... * What is a model? What does it do? For whom is it useful? ...
Figure 9.1.3: Separating Data from Application Systems
... Typically, a database has several users and each of them, depending on access rights and desire, needs an individual view of the data (content and form). Such a data view can consist of a subset of the stored data or of from the stored data derived data (not explicitly stored). For example: A univer ...
... Typically, a database has several users and each of them, depending on access rights and desire, needs an individual view of the data (content and form). Such a data view can consist of a subset of the stored data or of from the stored data derived data (not explicitly stored). For example: A univer ...
slides - UCLA Computer Science
... SQL permits the user to specify where they should occur by using nulls first or nulls last, for instance select student-id, rank ( ) over (order by marks desc nulls last) as s-rank from student-marks ...
... SQL permits the user to specify where they should occur by using nulls first or nulls last, for instance select student-id, rank ( ) over (order by marks desc nulls last) as s-rank from student-marks ...
OLAP Functions - UCLA Computer Science
... SQL permits the user to specify where they should occur by using nulls first or nulls last, for instance select student-id, rank ( ) over (order by marks desc nulls last) as s-rank from student-marks ...
... SQL permits the user to specify where they should occur by using nulls first or nulls last, for instance select student-id, rank ( ) over (order by marks desc nulls last) as s-rank from student-marks ...
Lecture 5 (SQL data definition)
... given a name – Access SQL requires a name, but some others don’t • Constraints which refer to single columns can be included in their definition ...
... given a name – Access SQL requires a name, but some others don’t • Constraints which refer to single columns can be included in their definition ...
vdb_formatted - Computer Science
... designer has chosen the Add tab to specify the actions that should occur when the Add button is clicked. The designer would choose the Page1.Remove tab to specify the actions (e.g., a delete) that should occur when Page1’s Remove button is clicked. ...
... designer has chosen the Add tab to specify the actions that should occur when the Add button is clicked. The designer would choose the Page1.Remove tab to specify the actions (e.g., a delete) that should occur when Page1’s Remove button is clicked. ...
BNL_STATUS_PIC_WSHOP
... Apply process got stuck could not write data into the database. At this moment, backup process was running this could cause some resource contention at the OS level. Database user service was not affected. Workaround: Isolate stream process on one node and run RMAN backups on different node. This is ...
... Apply process got stuck could not write data into the database. At this moment, backup process was running this could cause some resource contention at the OS level. Database user service was not affected. Workaround: Isolate stream process on one node and run RMAN backups on different node. This is ...
PHP_Bible
... on its availability and performance, it is imperative to maintain the database on more than one server. This will require a way to automatically keep the different servers synched up. This will usually involve a journaling system and often a master-slave relationship where one server is designated t ...
... on its availability and performance, it is imperative to maintain the database on more than one server. This will require a way to automatically keep the different servers synched up. This will usually involve a journaling system and often a master-slave relationship where one server is designated t ...
No Slide Title
... related to a keyword • applications in life sciences, defense, health care, enterprise information integration • New in 11g: • Improved query/optimizer support • Improved bulk loading • native, lightweight OWL inferencing ...
... related to a keyword • applications in life sciences, defense, health care, enterprise information integration • New in 11g: • Improved query/optimizer support • Improved bulk loading • native, lightweight OWL inferencing ...
Grid-Anforderungen aus der Hochenergiephysik
... 1. submit sql to server 2. determine meta data hash val (username, object-owner, session-parameter,...) and hash of sql statement 3. determine if meta-hash and sql-hash exist in shared pool if not you will get the following overhead: - CBO determines execution plan (CPU, I/O, access statistics) - pa ...
... 1. submit sql to server 2. determine meta data hash val (username, object-owner, session-parameter,...) and hash of sql statement 3. determine if meta-hash and sql-hash exist in shared pool if not you will get the following overhead: - CBO determines execution plan (CPU, I/O, access statistics) - pa ...
How NoSQL key-value and wide-column stores make in-image advertising possible
... DataStax Enterprise offers a distribution of Cassandra with three options: spinning disk, solid-state disk (SSD), or dynamic RAM (DRAM) caching. Similarly, Apache Accumulo adds two caching layers to the spinning disk storage option, and Oracle Berkeley DB and Amazon DynamoDB include a caching layer ...
... DataStax Enterprise offers a distribution of Cassandra with three options: spinning disk, solid-state disk (SSD), or dynamic RAM (DRAM) caching. Similarly, Apache Accumulo adds two caching layers to the spinning disk storage option, and Oracle Berkeley DB and Amazon DynamoDB include a caching layer ...
ppt - CSE, IIT Bombay
... Use of bloom filters can be used to reduce the amount of data rehashed in the SHJ Run a SHJ on the source data projected to only have the hash key and join attributes. Use the results of this mini-join as source for two FM joins to retrieve the other attributes for tuples that are likely to be in th ...
... Use of bloom filters can be used to reduce the amount of data rehashed in the SHJ Run a SHJ on the source data projected to only have the hash key and join attributes. Use the results of this mini-join as source for two FM joins to retrieve the other attributes for tuples that are likely to be in th ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... that performs optimization of queries at compile time. J.Plodzien, A.Krake presented the study of Object Query Optimization through Detecting Independent Subqueries to overcome the lacking that were faced in previous studies[01].In recent years, database research has concentrated on object-oriented ...
... that performs optimization of queries at compile time. J.Plodzien, A.Krake presented the study of Object Query Optimization through Detecting Independent Subqueries to overcome the lacking that were faced in previous studies[01].In recent years, database research has concentrated on object-oriented ...
PowerPoint
... • Assumes tables can be joined in a unique way • ie. the joins form an acyclic graph • can still select different joins with explicit switches ...
... • Assumes tables can be joined in a unique way • ie. the joins form an acyclic graph • can still select different joins with explicit switches ...