XML Schema
... XQuery is intended to play the same sort of role for XML data as SQL plays for relational data. XQuery is a functional language, and thus is declarative and compositional. XQuery can be used to restructure XML data, as well as to ask questions about it. XQuery became a W3C standard in January ...
... XQuery is intended to play the same sort of role for XML data as SQL plays for relational data. XQuery is a functional language, and thus is declarative and compositional. XQuery can be used to restructure XML data, as well as to ask questions about it. XQuery became a W3C standard in January ...
Lesson 1 Summary Slides
... Database Objects • Tables – store data in rows and columns. In a table, each row is a record, and each record consists of one or more fields • Forms – function as user-friendly interfaces for working with data • Reports – print and summarize data • Queries – extract subsets of data from one or more ...
... Database Objects • Tables – store data in rows and columns. In a table, each row is a record, and each record consists of one or more fields • Forms – function as user-friendly interfaces for working with data • Reports – print and summarize data • Queries – extract subsets of data from one or more ...
Consistent Query Answering in Databases
... syntactically new is obtained beyond some finite step There are sufficient conditions for semantic termination From some finite step on, only logically equivalent formulas are obtained In these favorable cases, a FO SQL query can be translated into a new FO SQL query that is posed as usual to the databa ...
... syntactically new is obtained beyond some finite step There are sufficient conditions for semantic termination From some finite step on, only logically equivalent formulas are obtained In these favorable cases, a FO SQL query can be translated into a new FO SQL query that is posed as usual to the databa ...
Microsoft Office Access 2013
... Database Objects • Tables – store data in rows and columns. In a table, each row is a record, and each record consists of one or more fields • Forms – function as user-friendly interfaces for working with data • Reports – print and summarize data • Queries – extract subsets of data from one or more ...
... Database Objects • Tables – store data in rows and columns. In a table, each row is a record, and each record consists of one or more fields • Forms – function as user-friendly interfaces for working with data • Reports – print and summarize data • Queries – extract subsets of data from one or more ...
SQL CLR Demystified
... • A CLR type should always be able to parse it’s own string representation • Methods that change the state of the type must be marked as mutator methods • Although in .NET we can define operator overloads to specify how operators (e.g. +, -, *, /) are applied to our classes, SQL Server does not use ...
... • A CLR type should always be able to parse it’s own string representation • Methods that change the state of the type must be marked as mutator methods • Although in .NET we can define operator overloads to specify how operators (e.g. +, -, *, /) are applied to our classes, SQL Server does not use ...
Guideline for sizing Data Warehouse Application
... becomes more and more difficult to extract meaningful data from across these databases. This arises because the data in different databases in various parts of an organization have often not been defined and named consistently. Standard database management systems are generally not equipped to merge ...
... becomes more and more difficult to extract meaningful data from across these databases. This arises because the data in different databases in various parts of an organization have often not been defined and named consistently. Standard database management systems are generally not equipped to merge ...
Chapter 15: Concurrency Control
... SI breaks serializability when txns modify different items, each based on a previous state of the item the other modified l ...
... SI breaks serializability when txns modify different items, each based on a previous state of the item the other modified l ...
Slide 1 - MI-OAUG
... Hybrid OLAP products, which allow both direct access to relational data for multidimensional processing, as well as having their own optimized multidimensional disk storage for aggregates and pre-calculated results. ...
... Hybrid OLAP products, which allow both direct access to relational data for multidimensional processing, as well as having their own optimized multidimensional disk storage for aggregates and pre-calculated results. ...
Document Scope - Database Security Systems
... ora_compute_Hstats.sh---computes table and index statistics with histograms for application schemas NOTE: Once statistics have been generated, the cost-based optimizer will be used by the instance if CHOOSE, FIRST_ROWS, or ALL_ROWS was set for the OPTIMIZER_MODE in the database parameter file. ...
... ora_compute_Hstats.sh---computes table and index statistics with histograms for application schemas NOTE: Once statistics have been generated, the cost-based optimizer will be used by the instance if CHOOSE, FIRST_ROWS, or ALL_ROWS was set for the OPTIMIZER_MODE in the database parameter file. ...
ODBC DSN-less Connections
... username, password, and an optional cursor type. In cases where a username and password, and cursor type are not required, the parameters can be replaced with a null string - ''. The connection id returned by this functions is needed by other ODBC functions. You can have multiple connections open at ...
... username, password, and an optional cursor type. In cases where a username and password, and cursor type are not required, the parameters can be replaced with a null string - ''. The connection id returned by this functions is needed by other ODBC functions. You can have multiple connections open at ...
Relational Model Advanced Topics in Microsoft SQL Server
... Customer table, finding these customers more quickly than if it had to scan the entire Customer table one record at a time. Thus, indexes can make the process of retrieving records fast and efficient. NOTE: With relatively small tables, the increased efficiency associated with indexes will not be re ...
... Customer table, finding these customers more quickly than if it had to scan the entire Customer table one record at a time. Thus, indexes can make the process of retrieving records fast and efficient. NOTE: With relatively small tables, the increased efficiency associated with indexes will not be re ...
6340-11-Recovery
... Deferred Update with concurrent users Two tables are required for implementing this protocol: Active table: All active transactions are entered in this table. Commit table: Transactions to be committed are entered in this table. During recovery, all transactions of the commit table are redone and al ...
... Deferred Update with concurrent users Two tables are required for implementing this protocol: Active table: All active transactions are entered in this table. Commit table: Transactions to be committed are entered in this table. During recovery, all transactions of the commit table are redone and al ...
Modeling and Querying Moving Objects
... In this paper we propose a data model called Moving Objects Spatio-Temporal (or MOST for short) for databases with dynamic attributes, i.e. attributes that change continuously as a function of time, without being explicitly updated. In other words, the answer to a query depends not only on the datab ...
... In this paper we propose a data model called Moving Objects Spatio-Temporal (or MOST for short) for databases with dynamic attributes, i.e. attributes that change continuously as a function of time, without being explicitly updated. In other words, the answer to a query depends not only on the datab ...
3. Database Systems, Data Warehouses, and Data Marts.
... contains data and their relationships • Object consists of attributes and methods that can be performed on the object’s data • Encapsulation: Grouping objects along with their attributes and methods into a single unit • Inheritance: New objects can be created faster and easily by entering new data i ...
... contains data and their relationships • Object consists of attributes and methods that can be performed on the object’s data • Encapsulation: Grouping objects along with their attributes and methods into a single unit • Inheritance: New objects can be created faster and easily by entering new data i ...
course
... It also specifies the attributes that are present in the result of the join The join operations are typically used as subquery ...
... It also specifies the attributes that are present in the result of the join The join operations are typically used as subquery ...
Sorting a Database
... 6. __________Another name for a category of information used in a database. 7. __________A database view that displays only one record on the screen. 8. __________A database view that displays several records on the screen. 9. __________To arrange data. 10. __________A type of sort that arranges dat ...
... 6. __________Another name for a category of information used in a database. 7. __________A database view that displays only one record on the screen. 8. __________A database view that displays several records on the screen. 9. __________To arrange data. 10. __________A type of sort that arranges dat ...
JDBC - Technicalsymposium
... existing example of a Type 1 driver. Type 1 drivers require some sort of nonJava software to be installed on the machine running your code, and they are implemented using native code. Type 2: Native-API partly Java drivers Type 2 drivers use a native code library to access a database, wrapping a thi ...
... existing example of a Type 1 driver. Type 1 drivers require some sort of nonJava software to be installed on the machine running your code, and they are implemented using native code. Type 2: Native-API partly Java drivers Type 2 drivers use a native code library to access a database, wrapping a thi ...
Outline of topics covered in the SQL fundamental series
... Prepared by Jennifer Kreie, Associate Professor Accounting & Information Systems Department College of Business, New Mexico State University The purpose of this set of Power Point slides and videos is to introduce SQL fundamentals using the Oracle database software and Oracle’s SQL Developer as the ...
... Prepared by Jennifer Kreie, Associate Professor Accounting & Information Systems Department College of Business, New Mexico State University The purpose of this set of Power Point slides and videos is to introduce SQL fundamentals using the Oracle database software and Oracle’s SQL Developer as the ...
An Enterprise Information System Data Architecture Guide
... Reports and queries, including flexible (ad hoc) queries: Reports and queries involve extracting, relating, and summarizing data from one or more tables. Reports evolve and new reports are often added. Support for ad hoc query capability is required so that users can enter their queries in structure ...
... Reports and queries, including flexible (ad hoc) queries: Reports and queries involve extracting, relating, and summarizing data from one or more tables. Reports evolve and new reports are often added. Support for ad hoc query capability is required so that users can enter their queries in structure ...
Structured Query Language (SQL) Advanced Features
... calculation on the values in a set of selected rows Expression specified for AVG and SUM functions must result in a numeric value. The expression for Min, MAX, and COUNT can result in a numeric, date, or string value By default all values are included in the calculation regardless of whether they ar ...
... calculation on the values in a set of selected rows Expression specified for AVG and SUM functions must result in a numeric value. The expression for Min, MAX, and COUNT can result in a numeric, date, or string value By default all values are included in the calculation regardless of whether they ar ...
Access to Relational Databases Using SAS®
... ODBC is an old technology; Microsoft recommends using the newer OLEDB interface instead. In most cases OLEDB gives better performance than ODBC, and does not requires creating a data source name on the client workstation. The only trick is that you need to know the name of the Oracle provider; in th ...
... ODBC is an old technology; Microsoft recommends using the newer OLEDB interface instead. In most cases OLEDB gives better performance than ODBC, and does not requires creating a data source name on the client workstation. The only trick is that you need to know the name of the Oracle provider; in th ...
Lecture 3: Hash indexing, index selection
... • Virtual hash table has no overflows - may need to increase in size. • Physical hash table has no overflows. • Virtual hash table is as small as possible may need to shrink. • ”Compression”: For any bit string s, if we consider the virtual hash table blocks whose index ends with s then either: – Th ...
... • Virtual hash table has no overflows - may need to increase in size. • Physical hash table has no overflows. • Virtual hash table is as small as possible may need to shrink. • ”Compression”: For any bit string s, if we consider the virtual hash table blocks whose index ends with s then either: – Th ...
