Data Migration Flashcards
__________ is the process of transferring data from one location, format, or application to
another.
● It requires careful planning and execution to _______ and ensure a _________
● The primary goal is to ensure that data remains accessible, accurate, and secure throughout the
process.
● The process begins with _________, where the data to be migrated is identified and
analyzed.
● Data extraction from source systems is done using___________.
● ____________occurs if there are disparities in data format or structure between source and
target systems. The transformed data is loaded into the target system.
● _________is crucial to avoid disruptions, often involving planned downtime or reduced
system activity.
● After confirming a successful migration, the old source system is __________ safely
Data migration
minimize risks
smooth transition
assessment and planning
tools, scripts, or APIs.
Data transformation
Migration scheduling
decommissioned
The following are some common scenarios that require ________:
● Replacement, upgrade, and expansion of storage systems and equipment
● Legacy software upgrade and replacement
● Firms moving from local storage system to a cloud-based system to optimize operations
● Website consolidation
● Installation of new systems to coexist and augment existing applications sharing the same dataset
● Infrastructure maintenance
● Switching to centralized databases to attain interoperability
● Consolidation of information systems
● Data center relocation
data migration
Businesses usually take up data migration when they have to move data between storage systems, upgrade to a
new software platform, or transition to a cloud-based infrastructure.
Here are some more reasons why businesses migrate data:
____________: As technology evolves, enterprises often need to update their software,
hardware, or infrastructure. Data migration allows them to seamlessly transition to newer systems while
preserving critical data and minimizing disruption.
_____________: Over time, data can become scattered across various systems and locations. Data
migration enables businesses to
consolidate data, making it easier to manage, access, and analyze.
______________: Organizations must comply with data protection regulations and ensure data
security. Data migration allows them to meet compliance requirements and safeguard sensitive information
during transfer.
_______________: When businesses expand or merge with others, they must integrate
data from multiple sources or locations. Data migration facilitates this process, enabling a smooth transition
of data and systems.
Upgrading Technology
Data Consolidation
Compliance and Security
Business Expansion and Mergers
Types of Data Migration
There are six types of data migration. A single data migration process can involve different types,
including:
- Storage Migration
- Database Migration
- Application Migration
- Cloud Migration
- Business Process Migration
- Data Center Migration
______________ is where a business migrates data from one storage location to another. It means moving data from one
physical medium to another. A common reason for storage migration is the ______ of storage equipment to more
sophisticated modern storage equipment. Hence, it encompasses movement from paper to digital, tapes to hard disk drives
(HDD), HDD to solid-state drives, and hardware-based storage to virtual (cloud) based storage.
The movement is not driven by a lack of space but rather a desire to upgrade storage technology. It normally ________ alter
the content or format of data. During storage migration, certain steps such as data validation, cloning, and data cleaning
and redundancy can be carried out
Storage migration
upgrading
does not
________ are data storage media where data is structured in an organized way. Databases are managed through___________.
Hence, _____________ involves moving from one DBMS to another or upgrading from the current version of a DBMS to
the latest version of the same DBMS.
The former is more __________ especially if the source system and the target system
use different data structures
Databases
database
management systems (DBMS).
database migration
database migration
____________ occurs when an organization goes through a change in application software or changes an
application vendor. This migration requires moving data from one computing environment to another. A new __________ may require radical transformation due to new application interactions after the migration.
The major challenge comes from the old and target infrastructures having distinctive data models and using_________ . ____________ can be provided by vendors to protect data integrity. Vendor web
interfaces may be scripted to facilitate data migratio
Application migration
application
platform
different data
formats
Application programming interfaces (APIs)
______________ requires the movement of business applications and data on business processes and metrics
to a new environment. The metrics can include customer, product, and operational information.
The migration is commonly instigated by business optimization and reorganization and mergers and acquisitions (M&A).
Such business combinations are necessitated by the need to enter new markets and remain competitive.
Business process migration
____________ relates to the migration of data center infrastructure to a new physical location or the movement of
data from the old data center infrastructure to new infrastructure equipment at the same physical location.
A ___________ houses the data storage infrastructure, which maintains the organization’s critical applications. It consists of
servers, network routers, switches, computers, storage devices, and related data equipment
Data center migration
data center
Extent of Data Migration
________ can also be classified by the extent to which the data is migrated. A few classifications include:
1. Full Migration
2. Partial Migration
3. Incremental Migration
4. Pilot Migration
Migration
_____________ involves transferring all of the data from one system to another. This form of migration often requires
significant time and resources, as it includes replicating existing live systems.
This type of migration is often used when
moving from legacy systems to modern platforms or for large-scale projects that involve migrating a full set of records.
Nuances: Requires a ___________ approach. There might be__________, especially when dealing with legacy systems.
Key considerations: Ensuring________ , mitigating downtime, integration and testing, planning for unforeseen
challenges, and ensuring stakeholder communication
Full migration
comprehensive and often resource-intensive
compatibility and integration
challenges
data consistency
_____________
Migrating select portions of the data, often just critical data. Useful when full migration is unnecessary or risks are too high.
Nuances: _________ which data sets to move can be challenging. Data dependencies might make this migration more
complicated than initially perceived, as interconnected data may require movement to maintain operational functionality.
Key considerations: Clearly _________ the data subset, understanding interdependencies, ensuring data integrity for the
migrated subset, and managing potential post-migration integration issues
Partial Migration
Prioritizing
defining
____________
Migrating a subset of data for testing the process before a full-scale migration. Helps in avoiding major disruptions or issues
in production systems.
Nuances: The subset chosen for pilot migration needs to be __________ of the broader dataset to provide valuable
insights. There’s a balance to be struck between having a dataset substantial enough for meaningful testing, but small
enough to mitigate risks.
Key considerations: _______ of a representative data subset, setting clear evaluation criteria for the pilot’s success, having
a rollback plan in place, and ensuring effective communication with stakeholders about the pilot’s purpose and expected
outcomes
Pilot Migration
representative
Selection
____________ occurs when data migrates from one system to another that is similar in architecture, operating system, or design.
Data can be easily transferred between systems and preserved in an identical format.
Nuances: Homogeneous migrations tend to be more __________, as there is little to no conversion required between the systems.
Key considerations: Ensuring data _________________, validating post-migration performance, addressing compatibility issues if present, and
planning for any significant downtime during the process.
Homogeneous migration
straightforward
accuracy and consistency
_______________ is the process of migrating data from one type of system to another that are dissimilar in architecture, operating system, or
design. This type of migration requires extensive planning, as data needs to be converted into a compatible format for the target system.
Nuances: Data may need to be ___________ in order to be compatible with the target system, which can introduce complex
challenges.
Key considerations: Data format _______, compatibility issues that might arise from disparate systems, ensuring data accuracy post-migration,
mitigating downtime
Heterogeneous migration
transformed and converted
conversions
