notes #3
... Data Independence • Physical Data Independence – Refers to immunity of conceptual schema to changes in the internal schema. – Internal schema changes (e.g. using different file organizations, storage structures/devices) should not require change to conceptual or external schemas. ...
... Data Independence • Physical Data Independence – Refers to immunity of conceptual schema to changes in the internal schema. – Internal schema changes (e.g. using different file organizations, storage structures/devices) should not require change to conceptual or external schemas. ...
user account
... • Windows Authentication mode is superior to mixed mode because users don’t need to learn yet another password and because it leverages the security design of the network. • Associated with SQL authentication is the sa account, which is the built-in SQL administrator account associated with SQL auth ...
... • Windows Authentication mode is superior to mixed mode because users don’t need to learn yet another password and because it leverages the security design of the network. • Associated with SQL authentication is the sa account, which is the built-in SQL administrator account associated with SQL auth ...
Database Access - USA School of Computing
... – A dynamic representation of records coming from one of two sources: a base table or query results • Tables are rectangular collections of data – Rows and columns or, equivalently, records and fields • Query results – A temporary collection of records satisfying the query criteria – Queries may be ...
... – A dynamic representation of records coming from one of two sources: a base table or query results • Tables are rectangular collections of data – Rows and columns or, equivalently, records and fields • Query results – A temporary collection of records satisfying the query criteria – Queries may be ...
Web-Based Assesment System - LeMoyne
... Takes powerful database system like SQL Server 2000 Requires direct control over college web server Takes a database expert to administer this system ...
... Takes powerful database system like SQL Server 2000 Requires direct control over college web server Takes a database expert to administer this system ...
IT 244 Database Management System
... • Data inconsistency – updating some of the copies but not the others • Data Dependency – data access is tied to the program so change in data will also change in programs • Excessive maintenance and upgrade costs – Modifying the programs and structure of the data files require a lot of effort. ...
... • Data inconsistency – updating some of the copies but not the others • Data Dependency – data access is tied to the program so change in data will also change in programs • Excessive maintenance and upgrade costs – Modifying the programs and structure of the data files require a lot of effort. ...
Disaster Recovery with SQL Server
... System architecture (How the system/application works) How many systems are involved and what their names are. Their IP Addresses, drive information, file locations Software installed, Contact information of DBA’s, or other key people. Know your SLAs and choose appropriate technology. www.ExtremeExp ...
... System architecture (How the system/application works) How many systems are involved and what their names are. Their IP Addresses, drive information, file locations Software installed, Contact information of DBA’s, or other key people. Know your SLAs and choose appropriate technology. www.ExtremeExp ...
Overview of In-database Processing
... Following common efficiency practices such as subsetting the data with the use of WHERE and limiting the variables selected by using DROP and KEEP will improve the overall performance. Awareness of what is happening in the database and what prevents in-database operations is important. It may be nec ...
... Following common efficiency practices such as subsetting the data with the use of WHERE and limiting the variables selected by using DROP and KEEP will improve the overall performance. Awareness of what is happening in the database and what prevents in-database operations is important. It may be nec ...
SSIS Changes in Denali
... No provisioning No device management No media decay Remote accessibility ...
... No provisioning No device management No media decay Remote accessibility ...
Data Representation
... meaningful information, so you might call it the basic building block for a structured database Each field has a unique field name that describes its contents A field can be either variable length or fixed length. ...
... meaningful information, so you might call it the basic building block for a structured database Each field has a unique field name that describes its contents A field can be either variable length or fixed length. ...
Manager Subordinate
... The subordinates column is still duplicative and non-atomic. What happens when we need to add or remove a subordinate?? We need to read and write the entire contents of the table.? That not a big deal in this situation, but what if one manager had one hundred employees??Also, it complicates the proc ...
... The subordinates column is still duplicative and non-atomic. What happens when we need to add or remove a subordinate?? We need to read and write the entire contents of the table.? That not a big deal in this situation, but what if one manager had one hundred employees??Also, it complicates the proc ...
Introduction to ERwin
... • “Always” use Integer and Identity(1,1) for Primary Keys. Use UNIQUE constraint for other columns that needs to be unique, e.g. “RoomNumber” • Specify Required Columns (NOT NULL) – i.e., which columns that need to have data or not ...
... • “Always” use Integer and Identity(1,1) for Primary Keys. Use UNIQUE constraint for other columns that needs to be unique, e.g. “RoomNumber” • Specify Required Columns (NOT NULL) – i.e., which columns that need to have data or not ...
Document
... conceptually similar to those in RDBMSes). Secondary indices are also available. Replication: MongoDB provides high availability with replica sets. Load balancing: MongoDB scales horizontally using sharding. The user chooses a shard key, which determines how the data in a collection will be distribu ...
... conceptually similar to those in RDBMSes). Secondary indices are also available. Replication: MongoDB provides high availability with replica sets. Load balancing: MongoDB scales horizontally using sharding. The user chooses a shard key, which determines how the data in a collection will be distribu ...
You receive a "Database Results Wizard Error" error message when
... Базата данни е в сайта, в папка Danni/fpdb/izpiti. Back to the top ...
... Базата данни е в сайта, в папка Danni/fpdb/izpiti. Back to the top ...
Self Service BI:
... • Regular speaker for TechNet, MSDN, Users Groups, Irish and UK Technology Conferences ...
... • Regular speaker for TechNet, MSDN, Users Groups, Irish and UK Technology Conferences ...
ppt slides
... Search Step 1 – Search the symbol table (using generated SQL) to identify the database tables, columns/cells that contain at least one of the keywords in the query. ...
... Search Step 1 – Search the symbol table (using generated SQL) to identify the database tables, columns/cells that contain at least one of the keywords in the query. ...
Introduction to Database Systems
... Physical data independence: Protection from changes in physical structure of data. ...
... Physical data independence: Protection from changes in physical structure of data. ...
Progress Performance Tuning
... Not enough space on Internal Drives to Dump New SAN was available Very Slow Dump Performance Customer said “nothing’s wrong w/SAN” The SAN Switch was using 10mbs but capable of 1gbs ...
... Not enough space on Internal Drives to Dump New SAN was available Very Slow Dump Performance Customer said “nothing’s wrong w/SAN” The SAN Switch was using 10mbs but capable of 1gbs ...
BCS THE CHARTERED INSTITUTE FOR IT ADVANCED DATABASE MANAGEMENT SYSTEMS EXAMINERS REPORT
... practice. The main keywords SOAP, Client and Service define the specific architecture. Hence a description of a database application that needs the support of this architecture should be described. The architecture is loosely distributed. The web n-tier client server is based on the early ideas behi ...
... practice. The main keywords SOAP, Client and Service define the specific architecture. Hence a description of a database application that needs the support of this architecture should be described. The architecture is loosely distributed. The web n-tier client server is based on the early ideas behi ...
data
... Example: Find the instructor ID and department name of all instructors associated with a department with budget of greater than $95000. select instructor.ID, department.dept name from instructor, department where instructor.dept name= department.dept name and ...
... Example: Find the instructor ID and department name of all instructors associated with a department with budget of greater than $95000. select instructor.ID, department.dept name from instructor, department where instructor.dept name= department.dept name and ...
Data Management in Geodise
... little descriptive metadata provided by the file system. Our focus is on leveraging existing database tools not commonly used in engineering … …and making them accessible to users of the system. © Geodise Project, University of Southampton, 2003. http://www.geodise.org/ ...
... little descriptive metadata provided by the file system. Our focus is on leveraging existing database tools not commonly used in engineering … …and making them accessible to users of the system. © Geodise Project, University of Southampton, 2003. http://www.geodise.org/ ...
Database Duplicity in Nigeria: Any Hope for Harmonization
... and expansive data administration and management. National database is a centralized system, typically multiuser and distributed information systems based on hypertext with web interfaces to the central database.” There is no way we can implement a database without a particular data concept. Data ha ...
... and expansive data administration and management. National database is a centralized system, typically multiuser and distributed information systems based on hypertext with web interfaces to the central database.” There is no way we can implement a database without a particular data concept. Data ha ...
