MIS 2502 Access 2007 Tutorial
... Format confirms the data in the field to the same format when it is entered into the datasheet. For text and memo fields, this property has two parts that are separated by a semicolon. The first part of the property is used to apply to the field and the second applies to empty fields. ...
... Format confirms the data in the field to the same format when it is entered into the datasheet. For text and memo fields, this property has two parts that are separated by a semicolon. The first part of the property is used to apply to the field and the second applies to empty fields. ...
For what are used constructor methods? What actions they can
... What is cursor variable? For what it is used and what actions are performed with it? What is different in cursor and cursor variable use? In what ways we can get data in program from database? What is cursor and cursor variable? For what they are used? Give an example of cursor variable use to extra ...
... What is cursor variable? For what it is used and what actions are performed with it? What is different in cursor and cursor variable use? In what ways we can get data in program from database? What is cursor and cursor variable? For what they are used? Give an example of cursor variable use to extra ...
Databases and WWW
... – tables, columns, fixed datatype for each column Text databases are available for storing non-structured data ...
... – tables, columns, fixed datatype for each column Text databases are available for storing non-structured data ...
The Low-Cal Database Environment
... • “Bad” DBA work is ~75% of a DBA’s time • More stringent compliance and security requirements – Working with auditors and compliance teams – Fears of data loss make security critical ...
... • “Bad” DBA work is ~75% of a DBA’s time • More stringent compliance and security requirements – Working with auditors and compliance teams – Fears of data loss make security critical ...
9.Sybase IQ tabelite administreerimine.
... The concept of a data mart is causing a lot of excitement and attracts much attention in the data warehouse industry. Mostly, data marts are presented as an alternative to a data warehouse that takes significantly less time and money to build. However, the term data mart means different things to di ...
... The concept of a data mart is causing a lot of excitement and attracts much attention in the data warehouse industry. Mostly, data marts are presented as an alternative to a data warehouse that takes significantly less time and money to build. However, the term data mart means different things to di ...
Worksheets52-56
... index by author, by subject and so on; it is possible to order the data, do searches and quickly retrieve the desired information even when using more than one search criteria (for example, not only all the books printed in 2001 but all the books printed in 2001 that have more than 200 pages and tha ...
... index by author, by subject and so on; it is possible to order the data, do searches and quickly retrieve the desired information even when using more than one search criteria (for example, not only all the books printed in 2001 but all the books printed in 2001 that have more than 200 pages and tha ...
Supporting Search-As-You-Type Using SQL in Databases
... character by character. We study how to support search-as-you-type on data residing in a relational DBMS. We focus on how to support this type of search using the native database language, SQL. A main challenge is how to leverage existing database functionalities to meet the high performance require ...
... character by character. We study how to support search-as-you-type on data residing in a relational DBMS. We focus on how to support this type of search using the native database language, SQL. A main challenge is how to leverage existing database functionalities to meet the high performance require ...
primary key
... structure, while the combination of two or more partial or full sets of structures is a merged result set and a new structure. Result sets are composed of a superset of data drawn from all or part of columns from two or more tables. The common column value between structures is the primary key in on ...
... structure, while the combination of two or more partial or full sets of structures is a merged result set and a new structure. Result sets are composed of a superset of data drawn from all or part of columns from two or more tables. The common column value between structures is the primary key in on ...
Data Design Concepts Overview of Database Systems
... provide security at three levels: the database itself, the Web server, and the telecommunication links that connect the components of the system ...
... provide security at three levels: the database itself, the Web server, and the telecommunication links that connect the components of the system ...
Practical Database Design and Tuning
... • Possible changes to the database design →Existing tables may be joined (denormalized) because certain attributes from two or more tables are frequently needed together. →For the given set of tables, there may be alternative design choices, all of which achieve 3NF or BCNF. One may be replaced by t ...
... • Possible changes to the database design →Existing tables may be joined (denormalized) because certain attributes from two or more tables are frequently needed together. →For the given set of tables, there may be alternative design choices, all of which achieve 3NF or BCNF. One may be replaced by t ...
14 Designing our staging area
... our new table. Earlier in this topic, we listed the key data elements that we will need for creating the columns. We didn’t specify any properties of those data elements other than the name, so we’ll need to figure that out. One key point to keep in mind here is that we want to make sure the sizes a ...
... our new table. Earlier in this topic, we listed the key data elements that we will need for creating the columns. We didn’t specify any properties of those data elements other than the name, so we’ll need to figure that out. One key point to keep in mind here is that we want to make sure the sizes a ...
Topics in Database Administration
... Transactions have properties (ACID) • Atomicity: A transaction is an indivisible unit of work. – Almost all languages that interface with a DBMS have a way to signify the start and end of a transaction. – Within the start and end are one or more SQL commands. ...
... Transactions have properties (ACID) • Atomicity: A transaction is an indivisible unit of work. – Almost all languages that interface with a DBMS have a way to signify the start and end of a transaction. – Within the start and end are one or more SQL commands. ...
Database Modeling and Implementation
... o Implement information retrieval software o Select database products o Configure database products o Train and support database users o Implement database information systems o rain users to use information systems o Maintain and modify information systems ...
... o Implement information retrieval software o Select database products o Configure database products o Train and support database users o Implement database information systems o rain users to use information systems o Maintain and modify information systems ...
OORM
... Performance: -, needs a join operation or at least two database accesses Maintenance: +, Factoring out objects into tables of their own makes them easier to maintain and hence makes the mapping more flexible. Consistency of the database: !, Aggregated objects are not automatically deleted on deletio ...
... Performance: -, needs a join operation or at least two database accesses Maintenance: +, Factoring out objects into tables of their own makes them easier to maintain and hence makes the mapping more flexible. Consistency of the database: !, Aggregated objects are not automatically deleted on deletio ...
An Introduction to SQL
... For each column in a table, the type of data that the column will store must be specified The exact list of data types available in different implementations of SQL varies ...
... For each column in a table, the type of data that the column will store must be specified The exact list of data types available in different implementations of SQL varies ...
Using SQL Server Management Studio
... Picture: Creating tables to the database The summary frame is divided to two parts. Upper part is used to create columns to the table. The part below has more precise information about each column. Create the columns you need for the table. For each column you have to give: • The name of the column. ...
... Picture: Creating tables to the database The summary frame is divided to two parts. Upper part is used to create columns to the table. The part below has more precise information about each column. Create the columns you need for the table. For each column you have to give: • The name of the column. ...
Online Index Recommendations For High
... high dimensional data. A control feedback technique is introduced for measuring the performance. Through this a database could benefit from an index change. The index selection minimizes the cost of the queries in the work load. Online index selection is designed in the motivation if the que ...
... high dimensional data. A control feedback technique is introduced for measuring the performance. Through this a database could benefit from an index change. The index selection minimizes the cost of the queries in the work load. Online index selection is designed in the motivation if the que ...
Chapter 9 - Joining tables
... 3. the artist “AC/DC” is a thing in the real world and should exist only once in the database This duplication of string data violates the best practices for database normalization which basically states that we should never put the same string data in the database more than once. If we need the dat ...
... 3. the artist “AC/DC” is a thing in the real world and should exist only once in the database This duplication of string data violates the best practices for database normalization which basically states that we should never put the same string data in the database more than once. If we need the dat ...
Teradata - dbmanagement.info
... Creating Indexes Similarities between Teradata and Oracle: Indexes take up space on disk Indexes can be unique and non-unique Indexes and secondary indexes provide alternate ways to access data Differences: Teradata indexes are not in B-tree structure Hash Subtables Teradata automat ...
... Creating Indexes Similarities between Teradata and Oracle: Indexes take up space on disk Indexes can be unique and non-unique Indexes and secondary indexes provide alternate ways to access data Differences: Teradata indexes are not in B-tree structure Hash Subtables Teradata automat ...
Chapter 8 - Databases
... Our for loop finds two rows, and each row is a Python tuple with the first value as the title and the second value as the number of plays . Do not be concerned that the title strings are shown starting with u' . This is an indication that the strings are Unicode strings that are capable of storing n ...
... Our for loop finds two rows, and each row is a Python tuple with the first value as the title and the second value as the number of plays . Do not be concerned that the title strings are shown starting with u' . This is an indication that the strings are Unicode strings that are capable of storing n ...
SQLite and Android Tutorial
... Deferred means that no locks are acquired on the database until the database is first accessed. Thus with a deferred transaction, the BEGIN statement itself does nothing to the filesystem. Locks are not acquired until the first read or write operation. The first read operation against a database cre ...
... Deferred means that no locks are acquired on the database until the database is first accessed. Thus with a deferred transaction, the BEGIN statement itself does nothing to the filesystem. Locks are not acquired until the first read or write operation. The first read operation against a database cre ...
Database performance tuning
... different version of the original SQL code which is fully equivalent and more efficient Query optimizer: Analyzes SQL query and finds most efficient way to access data Access plans: DBMS-specific and translate client’s SQL query into a series of complex I/O operations ...
... different version of the original SQL code which is fully equivalent and more efficient Query optimizer: Analyzes SQL query and finds most efficient way to access data Access plans: DBMS-specific and translate client’s SQL query into a series of complex I/O operations ...
CHAP01
... A DBMS is a data storage and retrieval system which permits data to be stored non-redundantly while making it appear to the user as if the data is well-integrated. 5. Advantages of the Database Approach a) Program-Data Independence: The separation of data descriptions (metadata) from the application ...
... A DBMS is a data storage and retrieval system which permits data to be stored non-redundantly while making it appear to the user as if the data is well-integrated. 5. Advantages of the Database Approach a) Program-Data Independence: The separation of data descriptions (metadata) from the application ...